Red Light Therapy: Mechanisms, Clinical Applications, and Evidence-Based Considerations

Posted on March 27, 2026 by Donald B. Yoo, M.D.

Red light therapy (RLT), or photobiomodulation (PBM), has emerged as a non-thermal, light-based modality with growing support in the biomedical literature. Its clinical relevance spans dermatology, wound healing, and regenerative medicine. As interest expands, it is important to distinguish between theoretical mechanisms, demonstrated clinical effects, and the parameters required to achieve reproducible outcomes.

What Is Red Light Therapy?

Red light therapy involves exposure to visible red (approximately 620–700 nm) and near-infrared (700–1100 nm) wavelengths. These wavelengths penetrate tissue and are absorbed by intracellular chromophores, most notably cytochrome c oxidase within the mitochondrial respiratory chain.

This interaction has been associated with:

  • Increased adenosine triphosphate (ATP) production
  • Modulation of reactive oxygen species (ROS)
  • Activation of transcription factors involved in cellular repair

These mitochondrial mechanisms and downstream signaling cascades are well-described in the literature (Hamblin, 2017; Avci et al., 2013).

Biological Effects on Skin and Connective Tissue

Experimental and translational studies suggest that red and near-infrared light influence multiple pathways relevant to skin physiology:

  • Upregulation of collagen synthesis via TGF-β–mediated pathways
  • Enhanced dermal remodeling and extracellular matrix organization
  • Increased angiogenesis and microcirculation
  • Reduction in inflammatory signaling

In human clinical studies, photobiomodulation has demonstrated improvements in skin complexion, collagen density, and wrinkle reduction (Barolet et al., 2016; Avci et al., 2013).

Clinical Applications

Dermatologic and Aesthetic

  • Photoaging and fine rhytides
  • Skin laxity and textural irregularities
  • Acne vulgaris and inflammatory dermatoses
  • Post-procedural recovery

Wound Healing and Regenerative Medicine

  • Chronic wounds and soft tissue injury
  • Scar modulation

Musculoskeletal and Pain Applications

  • Tendinopathy and soft tissue pain syndromes

Systematic reviews and meta-analyses suggest that PBM can improve pain and functional outcomes in soft tissue conditions, although heterogeneity in protocols remains a limitation (Tripodi et al., 2021).

Treatment Parameters and Dose-Response Relationships

A defining feature of photobiomodulation is its sensitivity to treatment parameters. Key variables include:

  • Wavelength: Determines tissue penetration and chromophore interaction
  • Irradiance (power density): Governs rate of energy delivery
  • Fluence (J/cm²): Total delivered energy
  • Treatment timing and frequency: Influences cumulative biological response

PBM follows a biphasic dose-response relationship (Arndt–Schulz law), in which insufficient energy yields minimal effect, while excessive exposure may attenuate therapeutic benefit (Hamblin, 2017).

At-Home Devices: Limitations in Context

Consumer-grade devices have improved accessibility; however, several limitations are frequently cited:

  • Lower and inconsistent energy output
  • Limited transparency in wavelength specificity and dosimetry
  • Variability in manufacturing standards
  • Lack of protocol standardization

Given the dose-dependent nature of PBM, these factors can influence reproducibility and clinical efficacy.

Clinical-Grade, In-Office Treatment: Where It Differs

From a scientific and clinical standpoint, the distinction between at-home and in-office treatment is primarily related to control of variables known to influence biological response.

  • Reproducible dosimetry: Energy delivery aligned with studied therapeutic ranges
  • Adequate irradiance: Sufficient power density for deeper tissue targets
  • Protocol standardization: Alignment with published clinical parameters
  • Integration with procedures: Use as an adjunct to lasers, microneedling, or surgery
  • Clinical oversight: Adjustment based on patient-specific variables

These factors are particularly relevant given that most high-quality studies demonstrating efficacy are conducted using controlled clinical devices.

Facial Plastic Surgery Applications

  • Reduction of postoperative edema and ecchymosis following rhinoplasty and blepharoplasty
  • Acceleration of re-epithelialization after laser resurfacing
  • Improvement in scar quality following incisional procedures

Emerging evidence suggests photobiomodulation may enhance postoperative recovery through modulation of inflammation and microcirculation.

Conclusion

Red light therapy represents a scientifically grounded modality with demonstrated effects on cellular metabolism, inflammation, and tissue repair. Its clinical utility continues to expand as higher-quality trials refine optimal treatment parameters.

While at-home devices may offer convenience, the strongest evidence base supporting photobiomodulation derives from controlled, clinical-grade applications.

References

  • Avci, P., et al. (2013). Low-level laser (light) therapy (LLLT) in skin: Stimulating, healing, restoring. Seminars in Cutaneous Medicine and Surgery, 32(1), 41–52. https://doi.org/10.12788/j.sder.0007
  • Barolet, D., et al. (2016). In vivo human dermal collagen production following LED-based therapy. Journal of Cosmetic and Laser Therapy, 18(2), 93–99. https://doi.org/10.3109/14764172.2015.1054634
  • Hamblin, M. R. (2017). Mechanisms and applications of the anti-inflammatory effects of photobiomodulation. AIMS Biophysics, 4(3), 337–361. https://doi.org/10.3934/biophy.2017.3.337
  • Tripodi, N., et al. (2021). Photobiomodulation in tendinopathy: A systematic review and meta-analysis. BMC Sports Science, Medicine and Rehabilitation, 13, 96. https://doi.org/10.1186/s13102-021-00306-z

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Is there a difference between K beauty skincare and American skincare?

Posted on March 24, 2026 by Donald B. Yoo, M.D.

Korean moisturizers place an emphasis on products that hydrate the skin while leaving a texture that remains light to the touch. Rather than trying to combine all the the ingredients in a single product as American moisturizers sometimes do, Korean skincare relies on a layered, multi-step approach to achieve both high hydration and skin barrier support while maintaining a non-occlusive and lightweight finish.

American skincare products tend to utilize higher levels of occlusives, which help protect dry and damaged skin, but may also feel “heavy” at times. Korean moisturizers often employ gels and gel-cream hybrid emulsions to achieve significant hydration while minimizing greasiness.

The disparity in regulatory environment between the U.S. and Korea also represents an important distinction between American and Korean moisturizers. Korea tends to have a regulatory environment more conducive to innovation and more efficient in allowing companies to translate their research and development into consumer-facing products. This allows Korean manufacturers to take advantage of unprecedented delivery systems and novel active ingredients faster than practically any other modernized country.

Why is salmon sperm showing up in skincare?

The basis of skin repair and hydration comes from the DNA fragments call PDRN (polydeoxyribonucleotide) that are isolated from salmon sperm. PDRN was originally investigated for its potential benefits in tissue repair and wound healing – such as patients with non-healing diabetic ulcers. Eventually the positive effect on cellular repair processes was applied to aesthetic medicine to improve the appearance of skin.

What are the potential benefits of using PDRN serums?

The most immediate benefit of PDRN serums is improved hydration, as the PDRN fragments are very effective at attracting and retaining moisture, creating a more dewy and luminous skin tone. With repeated use, skin texture and elasticity improves as the collagen support becomes augmented and the integrity of the skin barrier improves.

What, exactly, doesPDRN do? (Specifically, *how* does it work to promote the aforementioned benefit(s)?)

PDRN stimulate skin repair and collagen synthesis by interacting with receptors which activate fibroblast (skin cell) activity, driving the recovery of dermal injury and the synthesis of new collagen and elastin (the proteins giving firmness and elasticity to skin). Studies have also shown PDRN to have effects on reducing inflammation and redness by reducing the expression of inflammatory cytokines.

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A Guide on How to Analyze a Plastic Surgeon’s Before and After Photos

Posted on March 20, 2026 by Donald B. Yoo, M.D.

We are in an unprecedented era of visibility for aesthetic procedures. Anyone can go online and have immediate access to before and after photos, videos, and even procedure vlogs documenting the whole process from consultation to recovery. How then is a patient supposed to critically analyze this huge volume of content accurately? Read on to learn some insider information.

  1. Check the Lighting
    • You may assume the lighting conditions between the before and after photos are the same, but you’ll be suprised just how many surgeons try to pass off changes in lighting to actual surgical improvements in a patient’s appearance. Overhead lighting can accentuate shadows on a patient’s face while bright and diffuse lighting can eliminate shadows – think tear troughs and dark under eye circles, or photos showing skin quality. The best way to check for lighting is the patient’s complexion and the catchlights in a patient’s eyes. If the patient’s complexion does not look consistent from before to after photo, start being skeptical that the lighting has not stayed consistent. From there, look carefully at the reflection in the patient’s eyes. Is the light source symmetric on both sides of the face and the same as the after photos? Only when you see that can you be sure that the lighting is consistent between before and after photos.
  2. Check the Angles
    • Images should be taken from the same distance, at the same level, and same angle every time. Plastic surgeons are notorious for using facelift before and after photos where the patient has the chin down to scrunch neck wrinkles while the neck is extended in after photos to make the results look even more spectacular. The angle that a frontal view photo is taken can drastically alter the appearance of the eyes, nose and jawline to create the illusion of slimming and tapering and vice versa.
  3. Evaluate the Entire Body of Cases
    • A single successful photo is not enough to judge surgical skill. Look for:
    • Consistency: Multiple patients with similar outcomes indicate reproducibility. Ideally being able to identify before and afters of other patients with similar baseline anatomy or outcomes similar to your aesthetic ideals will bode favorably for the surgeon’s potential of success with your face.
    • Variety: A surgeon experienced with diverse facial anatomies demonstrates versatility and adaptability.

Analyzing before-and-after photos is both an art and a science. By focusing on photographic consistency, symmetry, subtle details, authenticity, and reproducibility, patients can make informed decisions while understanding realistic outcomes. Always approach these images critically, and use them as one of several tools to evaluate a surgeon’s expertise.

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My upper eyelids feel heavy and it feels like the skin is sagging. Do I need an upper blepharoplasty or browlift?

Posted on March 10, 2026 by Donald B. Yoo, M.D.

The periorbital area includes the upper eyelids and the eyebrows, and the interplay between the two anatomic units is important in creating a comprehensive rejuvenation to the eyes. For most patients the eyebrow position looks most aesthetically pleasing when the lateral aspect is level or slightly higher than the medial aspect, and the body of the eyebrow sits at or slightly above the supraorbital rim or brow bone. When the eyebrows are positioned higher than the brow bone it can lead to a startled or surprised appearance, while a position inferior or lower than the brow bone can contribute to an stern, angry or aged appearance. When the eyebrows are ptotic, the eyebrow skin may encroach on the upper eyelids or displace the upper eyelid skin inferiorly to create a hooded and heavy appearance to the upper eyelids.

When assessing the upper eyelids, the eyebrows must first be evaluated for their relative position. Once the normal position of the eyebrows has been established, then the surgeon may accurately assess the degree to which the upper eyelid skin is lax or redundant and can make a precise measurement in terms of the amount of skin removal. When the eyebrows are ptotic or droopy at their medial aspect, then an endoscopic browlift, direct browlift or coronal browlift may be indicated, depending on the patient’s anatomy and aesthetic goals. When the lateral brow is ptotic without accompanying ptosis of the medial brow, a temporal browlift may be most appropriate.

A temporal browlift involves incisions behind the temporal hairline bilaterally, and when executed precisely will not result in any change to the appearance of the hairline or alopecia. Within 3-6 months hair will typically grow through the incision and camouflage it completely. Through this hidden incision skin may be removed and dissection performed down to the orbital rim to release the connections tethering and pulling down on the brow. The same incision can be used to create further dissection into the midface and cheeks to perform and endoscopic facelift. In that instance suspension sutures are used to elevate the soft tissue and skin along the midface and, depending on the patient, the lateral canthus of the eyes, along with the brow/upper eyelid complex. In a temporal browlift the suspension sutures secure the mobilized skin/muscle/fascia flap to the deep temporalis fascia, creating a more open and refreshed appearance to the eyes. The elevation of the brows and brow skin allow for elevation of the supratarsal crease even when upper eyelid skin has not been surgically removed.

Before and after temporal browlift
Before and After Temporal Browlift

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What is the difference between upper blepharoplasty, double eyelid surgery and Asian blepharoplasty?

Posted on February 20, 2026 by Donald B. Yoo, M.D.

All these terms refer to specific types of upper eyelid surgery, which are some of the most commonly performed aesthetic procedures worldwide. Upper blepharoplasty encompasses double eyelid surgery and Asian blepharoplasty as it involves surgical reshaping of the upper eyelids, whether for functional or purely aesthetic reasons. Traditional upper blepharoplasty involves removal of excess skin and fat which often become excessive with age and begin to encroach on the visual fields, sometimes even causing deficits in peripheral vision. Incision design typically follows the naturally occurring upper eyelid crease, where it will heal as a difficult to detect thin line.

Before and After Upper Blepharoplasty

Under the umbrella of upper eyelid surgery then comes double eyelid surgery and Asian blepharoplasty. Double eyelid surgery refers to upper blepharoplasty in patients that either lack a defined upper eyelid crease (supratarsal crease) or have asymmetry of the upper eyelid creases. In these patients the crease can be surgically created or reinforced by anchoring the crease internally with sutures underneath the skin. Incision design in these cases follows the desired crease shape and height and the orbicularis and/or skin is secured to the tarsal plate or levator aponeurosis (muscle that opens the eyelid) to cause the upper eyelid to fold and crease in the desired line. Double eyelid surgery can be performed on patients of all ethnicities.

Asian blepharoplasty represents a slightly more narrow of patients as during Asian blepharoplasty the goal often involves creating or enhancing the upper eyelid fold, but may also involve changing the height or shape of the supratarsal crease, height of the upper eyelid margin, and the appearance of medial and lateral canthi. During Asian upper eyelid surgery and Asian blepharoplasty excess skin may or may not be present, and the focus tends to to be on creating a brighter and more aesthetic appearance to the eyes.

Asian Blepharoplasty Asian Eyelid Surgery Before and After

Learn more: https://www.donyoomd.com/services-surgical-asian-blepharoplasty.php

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What is the difference between ptosis repair and upper blepharoplasty when it comes to upper eyelid surgery?

Posted on February 14, 2026 by Donald B. Yoo, M.D.

Patients often get confused about what ptosis is, which makes sense since even the pronunciation can be a little confusing. For starters, the “p” in ptosis is silent, so it sounds more like toe-sis, and refers to the upper eyelid margin (the part containing eyelashes) as it crosses the iris (colored part of your eye). For most patients the eyelid margin will cover the same amount of iris on both eyes. In these patients, the the eyelids will appear symmetric if the upper eyelid crease, or supratarsal crease, is symmetric in terms of height and shape. If the supratarsal crease is different in the right vs left eye, then the eyelid may still appear asymmetric. For this reason it is important to distinguish the source of asymmetry when the upper eyelids appear uneven.

Right Upper Eyelid Ptosis

Some patients will have ptosis in both upper eyelids, resulting in a sleepy or droopy appearance to the upper eyelids. In these cases, ptosis repair may be performed on both sides to create a brighter, more open and more “awake” appearance. The eyes looks brighter after a ptosis repair since the amount that is able to reflect off the eyes is increased, creating a greater light-reflex. It is the distance from the light reflex to the lid margin that surgeons measure to determine the presence and extent of ptosis. This margin-reflex distance, or MRD, will typically be 4-5 mm, and less than 4 mm usually indicates some degree of ptosis. Ptosis repair can be performed to one eye, or both eyes to create greater symmetry, and may be performed in isolation or in combination with upper blepharoplasty. In the presence of excess upper eyelid skin, fat, or upper eyelid crease asymmetry, upper blepharoplasty provides a powerful avenue for surgeons to optimize eyelid symmetry.

Upper Blepharoplasty with Ptosis Repair
Revision Upper Blepharoplasty with Supratarsal Fixation

Achieving optimal symmetry to the upper eyelids requires a surgeon with an eye for detail and with a precise surgical technique to comprehensively address all the aspects of your eyelid anatomy that may be causing asymmetry.

see more: https://www.donyoomd.com/services-surgical-asian-blepharoplasty.php

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Is there a way to make my uneven eyelids more symmetric?

Posted on January 28, 2026 by Donald B. Yoo, M.D.

Eyelids can appear uneven for a few different reasons. The most common reason concerns the upper eyelid fold, or the supratarsal crease, which can be influenced by the amount of redundant skin (dermatochalasis), asymmetry of brow position, ptosis (or droopy eyelid), and position of the globe within the orbit. Even in the absence of these other findings, many people naturally have a supratarsal crease that has a slightly different height and shape on one side relative to the other.

The upper eyelid crease normally forms from a connection between the distal fibers of the levator aponeurosis into the eyelid skin. This muscle (levator) is responsible for opening the upper eyelid, and when open the interdigitations between the levator and skin create a distinct fold, or supratarsal crease. The height of this fold depends on the individual’s specific anatomy, with some people having a high, deep crease while others have very low or shallow creases. The strength of the connection between the levator and skin typically determines the depth of the crease, while the size of the tarsal plate (fibrous structure providing shape to the upper eyelid) often contributes to the crease height.

So what to do if you have asymmetric upper eyelid creases? Some of you may have already discovered eyelid tape or eyelid glue, which essentially modifies the height and shape of the crease mechanically. Unfortunately eyelid tape and glue are often visible, and are rarely a permanent solution. The permanent solution involves creating or reinforcing the connection between the levator aponeurosis and skin in a symmetric and durable fashion across both eyelids. Fortunately, upper blepharoplasty with supratarsal fixation is designed to accomplish exactly this by using sutures to anchor the levator and skin to create a specific height and shape to the upper eyelid crease.

Upper blepharoplasty with supratarsal fixation

In addition to securing the upper eyelid crease, a meticulous surgeon will assess for other factors causing asymmetry and address those during upper blepharoplasty surgery, including the amount of excess skin hanging over the crease and the amount of fat in the upper eyelid. An important consideration to skin removal during blepharoplasty is to ensure that the eyes are still able to close fully and naturally, and this can be precisely measured by the surgeon during the procedure.

Revision Upper Blepharoplasty with Supratarsal Fixation

When performed properly, upper blepharoplasty with supratarsal fixation will create a refreshed and symmetric appearance to the eyelids, while preserving of all their natural function and beauty.

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Are there differences between male and female Asian rhinoplasty?

Posted on January 14, 2026 by Donald B. Yoo, M.D.
Before and After Revision Male Asian Rhinoplasty

There are some subtle nuances and some significant differences that differentiate male and female Asian rhinoplasty. In terms of anatomic differences, male noses tend to have thicker nasal bones, cartilage that is typically wider and more resilient, and – on average – skin that is thicker and more sebaceous. This has some important implications in terms of surgical planning as these aspects play into the optimal techniques for each patient, and specifically in the design and shaping of the grafts to be used during surgery. When native lower lateral cartilage (tip cartilage) and septal cartilage have thickness and resilience it requires strong grafts to change their shape into the desired one. Patients requiring stronger grafting material may benefit from using costal cartilage grafts rather than softer cartilage like that from the ears to ensure enough rigidity to change the shape of the thicker overlying skin envelope.

Before and After Revision Asian Rhinoplasty

Perhaps the biggest differentiator between female and male Asian rhinoplasty relates to the ideal aesthetics of the nasal appearance. For female patients refinement and femininity represent priorities equally as important as the overall balance and harmony of the nose. While overall refinement is certainly important for male rhinoplasty as well, the preservation and enhancement of certain key male characteristics occupy high importance in the list of priorities for male patients. Two of the most important features of the male nose are the height and shape of the profile, and the nasolabial angle.

For a nose to look masculine and strong it must have a certain amount of projection along the radix (area of the nasal dorsum/bridge between the eyes) and an overall straight or slightly convex shape on profile view. Most Asian females prefer a softer appearance to the profile, with the tip projecting slightly beyond the height of the dorsum or bridge to create a supratip break, or what is referred to colloquially as a “slope”. This slope creates a prettier and more feminine shape than a straight profile, and generally a softer overall appearance.

The nasolabial angle refers to the angle the tip of the nose makes with the upper lip when viewed from the lateral or profile view. The more larger or more obtuse the nasolabial angle the more upturned (rotated) the nasal tip will appear and the shorter the relative length of the nose. The smaller or more acute the nasolabial angle and the more downturned (counter-rotated) the nasal tip will appear and the longer the relative length of the nose. Male patients generally prefer to have a 90-95 degree nasolabial angle, while female patients may prefer angles between 95-105 degrees, depending on their total height. Shorter more upturned noses may look balanced on petite females with small faces and delicate facial features, while longer more counter-rotated noses will look most appropriate on tall male patients. Shorter patients generally can tolerate more upturn or rotation to the tip of the nose as it will not cause excessive nostril show since most people of average height will be looking at an angle down at their noses. The opposite is true for tall patients – the average person will be staring slightly up at their nose, and thus a more counter-rotated tip is most appropriate.

Alarplasty and Male Revision Asian rhinoplasty with rib cartilage and DCF

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XERF Radiofrequency Skin Tightening: A Non-Surgical Option for Facial Rejuvenation

Posted on January 7, 2026 by Donald B. Yoo, M.D.
Before and After XERF RF Nonsurgical Facelifting

What Is XERF?

XERF is an advanced non-invasive radiofrequency (RF) skin tightening treatment designed to improve skin firmness, elasticity, and overall texture without surgery or injections. It utilizes controlled thermal energy to stimulate the skin’s natural collagen-producing processes, making it an option for patients seeking facial rejuvenation with minimal downtime.

XERF is commonly used to address:

  • Mild to moderate facial and neck skin laxity
  • Early jowling and jawline softening
  • Loss of skin firmness due to aging
  • Crepey or thinning skin texture

Importantly, XERF does not replace surgical procedures such as a facelift, but may be appropriate for select patients seeking non-surgical skin tightening.

How Does XERF Work?

XERF delivers radiofrequency energy into the deeper layers of the skin while protecting the surface. This energy gently heats the tissue, which:

  1. Temporarily contracts existing collagen fibers, producing subtle immediate tightening
  2. Stimulates fibroblasts, the cells responsible for producing new collagen
  3. Encourages gradual skin remodeling over several weeks to months

The device uses dual radiofrequency frequencies, allowing energy to reach different skin depths in a controlled and uniform manner. Integrated cooling technology enhances patient comfort during treatment.

Why Collagen Matters in Facial Aging

Collagen is the primary structural protein responsible for skin firmness and resilience. Beginning in the mid-20s, collagen production declines steadily, leading to:

  • Skin laxity
  • Wrinkling
  • Loss of jawline definition
  • Thinning dermal support

Clinical studies have demonstrated that radiofrequency energy can safely stimulate collagen remodeling, which is why RF technology has been used in aesthetic medicine for over two decades.

Clinical Evidence Supporting Radiofrequency Skin Tightening

While XERF is a newer platform, its underlying technology—non-ablative monopolar radiofrequency—is well studied in peer-reviewed medical literature.

Clinical research has shown that radiofrequency treatments can:

  • Improve skin firmness and elasticity
  • Increase dermal collagen density
  • Produce visible tightening with a favorable safety profile

Published studies in dermatology and aesthetic surgery journals demonstrate histologic collagen remodeling and clinically measurable improvements in skin laxity, with high patient satisfaction and low risk of adverse events when performed appropriately.

What to Expect During XERF Treatment

  • Treatment time: Typically 20–40 minutes, depending on the area
  • Anesthesia: Not required
  • Sensation: Warmth with mild pressure
  • Downtime: None; patients return to normal activities immediately

Some patients notice subtle tightening shortly after treatment, with progressive improvement over 2–3 months as new collagen develops.

Who Is a Good Candidate for XERF?

XERF may be appropriate for patients who:

  • Have mild to moderate skin laxity
  • Prefer non-surgical facial rejuvenation
  • Are not ready for a facelift or neck lift
  • Want minimal downtime

Patients with significant skin laxity may benefit more from surgical intervention, which is why consultation with a board-certified facial plastic surgeon is essential.

Safety and Regulatory Considerations

Radiofrequency devices for skin tightening have been cleared by regulatory agencies, including the U.S. Food and Drug Administration (FDA), for indications related to skin tightening and wrinkle reduction. XERF uses established RF principles within these safety parameters.

As with any aesthetic procedure, outcomes depend on:

  • Proper patient selection
  • Provider expertise
  • Individual skin biology
Radiofrequency XERF Skin Tightening Before and After

XERF vs Surgical Facial Rejuvenation

FeatureXERF RF TreatmentFacelift Surgery
InvasivenessNon-invasiveSurgical
DowntimeNone2–4 weeks
AnesthesiaNoneGeneral anesthesia
Degree of tighteningMild–moderateSignificant
LongevityGradual, maintenance neededLong-lasting

XERF is best viewed as part of a comprehensive facial aging strategy, not a replacement for surgery.

Conclusion

XERF represents an evolution in non-surgical radiofrequency skin tightening, offering patients a scientifically supported option for improving skin firmness and texture with minimal interruption to daily life. Grounded in well-established RF technology and collagen biology, XERF may be an appropriate treatment for carefully selected patients seeking subtle, natural-appearing rejuvenation under the guidance of an experienced facial plastic surgeon.

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Scientific References

  1. Elsaie ML. Cutaneous remodeling and skin tightening with radiofrequency devices. J Cutan Aesthet Surg. 2019;12(2):83–89.
  2. Goldberg DJ, Fazeli A. Nonablative skin tightening with radiofrequency energy. J Am Acad Dermatol. 2010;62(2):232–239.
  3. Alster TS, Tanzi EL. Improvement of facial and neck laxity with nonablative radiofrequency. Arch Dermatol. 2004;140(5):559–564.
  4. Gold MH. Radiofrequency devices for facial rejuvenation. Dermatol Clin. 2015;33(1):77–89.
  5. Lee SJ, et al. Clinical efficacy and safety of non-ablative radiofrequency for skin tightening: A systematic review. Cosmetics. 2024;11(3):71.

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Is there a downside to using septal cartilage alone during Asian rhinoplasty?

Posted on December 4, 2025 by Donald B. Yoo, M.D.

Septal cartilage varies in thickness and strength from patient to patient, and from ethnicity to ethnicity. Patients with large, prominent noses often have thick septal cartilage which has a lot of intrinsic strength and resilience. In performing rhinoplasty on this subset of patients, a surgeon can comfortably harvest septal cartilage while preserving ~10-15 mm of dorsal and caudal strut while still maintaining the structural integrity of the nose. When the septal anatomy does not have much thickness, strength, or quantity, as can often be the case in Asian noses, then preserving only 15 mm of septal width is not sufficient to preserve the shape of the nose. With a 15 mm dorsal or caudal strut, the cartilage may still buckle and create a saddling of the nasal dorsum, loss of projection and ptosis of the nasal tip, or an even more serious collapse of the nose. For Asian patients often 18-20 mm of septal strut should be preserved to maintain the strength of the septum.

In addition to the increased risk of weakening the structure and shape of the nose by over-resecting cartilage from the septum of an Asian nose, the question still remains whether or not the harvested septal cartilage will provide enough structure and rigidity to reshape the nose. Often the septal cartilage does not provide enough support to resist the forces of thick, sebaceous skin and will be insufficient to create adequate, durable structure. The ideal case for using septal cartilage alone remains for patients with large, thick septal cartilage and requiring only mild to moderate structural grafting in the presence of of thin to medium skin thickness.

Septal cartilage is frequently removed during septoplasty for straightening the septum. Septoplasty may be performed entirely through incisions hidden inside the nose without affecting the shape of the nose. Asian patients, however, should be mindful of the fact that this otherwise straightforward operation should be performed with proper regard of the differences between Asian nasal anatomy and the typical white nose to avoid any of the complications of over-resection of the septal cartilage.

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