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- Presentation
Non-Ablative Fractionated Laser Technology for Skin Rejuvenation and PIH Treatment
Description
The dermatologist explains how non-ablative fractionated lasers work and why they are useful for skin rejuvenation and post-inflammatory hyperpigmentation (PIH). These lasers use mid-infrared wavelengths that are absorbed by water enough to create controlled dermal coagulation without ablating tissue, leading to improved skin texture, firmness, and faster healing because treated zones are surrounded by untreated skin. She contrasts columnar fractionation with newer focal point technology, which uses cone-shaped energy delivery and may reduce PIH risk by sparing more epidermis. Treatment choice depends on lesion depth and wavelength: shorter wavelengths such as 1927 nm are better for superficial dyschromia, while 1550 nm penetrates deeper for wrinkles and scars; higher energy and density increase depth but also raise risk. The talk emphasizes cautious settings, especially in skin of color, with good cooling and attention to PIH risk, and notes that topical agents like hydroquinone, tranexamic acid, kojic acid, or steroids can be combined. Clinical examples show benefit for PIH on the face and body, acne scars, tattoo-related PIH, skin quality, and even upper-face laxity/brow or eyelid improvement in older patients. The speaker also reviews side effects—usually mild and temporary, such as erythema, but sometimes PIH, melasma worsening, herpes reactivation, acneiform eruptions, or texture irregularity—and stresses that these are more likely with aggressive settings.
View moreConclusions
- Non-ablative fractionated lasers are presented as a versatile, generally safe way to improve skin texture, dyschromia, scars, and overall skin quality with less downtime than ablative resurfacing.
- Choosing the right wavelength and energy is the key clinical decision: shorter penetration is better for superficial pigment, while deeper dermal pathology such as wrinkles and scars needs deeper-penetrating settings.
- Higher wavelengths around 1927 nm are especially useful for superficial pigment problems like PIH, while 1550 nm can reach deeper dermis and is better suited for scars and deeper wrinkles.
- For post-inflammatory hyperpigmentation, especially on the body or in skin of color, conservative low-density and low-fluence treatment can be effective and may outperform observation alone.
- The exact mechanism for PIH improvement is not fully known, but it may involve pigment mobilization through microscopic epidermal necrotic debris, dermal remodeling, and changes in inflammatory or phagocytic behavior.
- Treatment density is a major driver of PIH risk, so lower density, better cooling, and avoidance of excessive bulk heating are emphasized to reduce melanocyte activation.
- NAFL can be combined safely with other same-day treatments such as vascular laser, pigment laser, microneedling radiofrequency, cryotherapy, cautery, and even neuromodulators or fillers in appropriate patients.
- Older patients may respond particularly well to NAFL for periorbital rejuvenation, including improvements in eyelid laxity and brow elevation.
- Adverse effects are usually temporary and uncommon, with erythema being the most frequent, while acneiform eruptions, texture irregularity, worsening melasma, HSV reactivation, and PIH are possible but manageable.
- Overall, the presentation argues that NAFL should be used with individualized settings rather than one-size-fits-all protocols, because matching wavelength, density, energy, skin type, and target depth determines both efficacy and safety.
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