PHAs benefits for skin: what it does and who it suits
People reach for PHAs to exfoliate very gently with humectant support. This guide covers what to expect, what it feels like and how to choose a good product.
What PHAs actually does
Category: polyhydroxy acids. In a cosmetic routine the job of PHAs is to exfoliate very gently with humectant support, which fits its stated use: very gentle exfoliation for sensitive skin.
Typical strength: 5–15%. Best used evening.
What you can realistically expect
Timeline: four to eight weeks. Typical sensation: barely any tingle.
A popular belief is that it is too mild to see a result; in reality gentle and steady often beats aggressive and intermittent.
Who it suits, and who should wait
Best for sensitive skin and beginners. Still use SPF next morning.
Take extra care with layering with strong AHAs.
How to spot a good product
Look for gluconolactone, lactobionic acid. Skip formulas where PHAs appears after fragrance and preservatives.
Practical tip: a good bridge before stronger acids.
Adjusting for your skin
Skin type changes how quickly you can build up, so use these starting points as a guide.
What to look for before you buy
Spend thirty seconds with the back of the pack before spending money on the front.
Frequently asked questions
How long does PHAs take to work?
Timeline: four to eight weeks.
Is PHAs suitable for sensitive skin?
It depends on strength and formula; still use SPF next morning. Patch-test first.
Can I use PHAs every day?
Start two to three nights per week, then adjust based on how skin feels.
Is it true that it is too mild to see a result?
Not quite: gentle and steady often beats aggressive and intermittent.