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Medical Laser Hair Removal

Long-term hair reduction with medical lasers

Duration

15-90 min (varies by area)

Downtime

0 days

Sessions

5-8 sessions (1-2 mo intervals)

About This Treatment

Medical hair removal uses Selective Photothermolysis targeting melanin to deliver laser energy to hair follicles. Main wavelengths: Alexandrite (755nm), Diode (810nm), Nd:YAG (1,064nm).

Diode works on broad skin types; Nd:YAG is safest for dark skin.

Mechanism of Action

Laser light absorbed by melanin in hair shaft converts to heat, damaging stem cell region (bulge) and dermal papilla. As per Anderson & Parrish (1983) selective photothermolysis theory, pulse duration must be shorter than the target's thermal relaxation time.

Indications

Hair removal

Expected Results

70-90% permanent hair reduction after 5-8 sessions. Only effective on anagen (growth phase) hair, requiring multiple treatments aligned with hair cycles.

Clinical Evidence

Anderson RR, Parrish JA (1983)

Selective photothermolysis: precise microsurgery by selective absorption of pulsed radiation. Science

Clinical improvement was reported in this study (see original paper for details).

Dierickx CC, Grossman MC, Farinelli WA, Anderson RR (1998)

Permanent hair removal by normal-mode ruby laser. Arch Dermatol

Clinical improvement was reported in this study (see original paper for details).

Risks & Side Effects

Pain (cooling mitigates), transient redness/swelling. Rare burns, PIH, folliculitis. Contraindicated on tanned skin.

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