The science · Plain English
Light, pigment and the growth cycle.
No magic and no jargon. Three things explain how at-home IPL works, why it takes twelve weeks, and why it doesn't work on everyone.
Light finds pigment
Each flash sends broad-spectrum light into the skin. Melanin — the pigment that makes hair dark — absorbs it, the way a black t-shirt soaks up sun while a white one doesn't.
Pigment turns to heat
The energy travels down the hair shaft to the follicle and warms it until the follicle drops into a dormant state and stops producing hair.
Cycles set the timetable
Only follicles in their active growth phase respond — roughly a fifth to a third at any moment. That's why it's a weekly programme over twelve weeks, not a one-off zap.
One short session a week. You won't see much yet — hair grows in cycles, and that's normal.
Regrowth starts coming back slower and patchier. Most people notice it's working.
Smoother for longer, with many areas barely needing a razor.
After week twelve, a top-up every four to eight weeks maintains the result.
Results build with consistent weekly use and vary by person, skin tone, hair colour and body area. Typical visible progress, not a guarantee.
Comfort is what makes power usable.
Energy is only half the story. A flash strong enough to work is also a flash you can feel, and the setting people actually stick with is the one that doesn't make them flinch.
A chilled sapphire contact window draws heat off the skin surface at the moment of the pulse. Cooling isn't a comfort extra here — it's what lets the higher levels be used at all, and consistency at a higher level is what drives results.
The same physics that makes it work is what makes it selective.
The mechanism depends on the hair being darker than the skin around it. Remove that contrast and there is nothing for the light to target — or too much for it to target safely.
White, grey, red and light-blonde hair carry too little melanin to absorb enough energy. No device changes that.
On the deepest skin tones the surrounding skin absorbs energy meant for the follicle — a safety problem, not a results one.
Never near the eyes, and never over tattoos, moles or broken skin. Not during pregnancy. The manual carries the full list.