Both laser and intense pulsed light (IPL) devices work the same way: they emit a flash of light that converts to intense heat (around 70°C) when it hits the melanin in the hair, destroying the follicle. The main difference? Lasers use a single wavelength (often red for hair removal), making them highly targeted. IPL delivers a broad-spectrum flash that's filtered to focus on melanin (and with different settings, it can treat pigmentation spots too).
They're equally effective under these conditions:
1. Target hairs must be in the anagen (growth) phase—not fine vellus hairs (always shave the area first to expose proper hair shafts).
2. The device must be precisely calibrated: too much energy risks skin burns; too little fails to eliminate the hair.
Key insight: IPL is slightly less precise than laser, requiring more sessions for similar results—but with lower per-session costs, the total expense balances out.
Most don't even claim permanence, and here's why: for safety, they're limited to roughly one-third the power of professional or medical-grade equipment and rely solely on IPL. The routine? Shave every two weeks, then flash. From session one, regrowth is finer and slower. With ongoing use, some areas stay hair-free.
Pro advice: Skip home devices during a professional laser course (they may dilute results), but use them post-treatment for easy touch-ups on stray hairs.
Yes, but success hinges on hair melanin, not just skin. These treatments shine on light skin with dark hair. For blond or red hair, IPL works better—its polychromatic light captures subtler melanin better than monochrome lasers.
On dark skin with dark hair, Nd:YAG lasers are the go-to; their wavelength targets hair follicles without overheating skin melanin.
The exception? White or gray hair, lacking melanin entirely. Here, electrolysis is the only option: a needle delivers an electric current directly into the follicle (it's thorough but time-intensive and uncomfortable—consider yourself warned).
