Dark Spot Serum
PHA formula. For sensitive melanin-rich skin that's been burned before.
- PHA (Gluconolactone) — the gentlest exfoliant available
- Safe for sensitive skin that reacts to AHAs and retinol
- Fades melasma, post-acne marks, pregnancy dark spots
- No burning, no peeling, no post-inflammatory risk
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You've been burned. Literally. And now you don't trust anything.
You've tried serums that promised to fade dark spots. Some burned. Some peeled. Some did nothing. Worse — some triggered more hyperpigmentation. This isn't a coincidence: AHA-based formulas create inflammation, and inflammation on melanin-rich skin creates new dark spots. The cycle is vicious.
- Dark spot serums that burned or caused redness
- AHAs and retinol that triggered peeling and irritation
- Products that made your spots darker, not lighter
- Melasma from pregnancy that won't budge after years
The science
PHA. Not AHA. The difference is everything for your skin.
PHA stands for Polyhydroxy Acid. Gluconolactone is a PHA — it works like an exfoliant but with a larger molecule size, meaning it penetrates more slowly, more gently, and without the irritation that AHAs cause on sensitive, melanin-rich skin.
PHA vs AHA
Gluconolactone
No PIH risk
4–8 week results
What to expect, week by week
Stage 1 · Week 1–2
No reaction
You're watching carefully. Waiting for the sting, the redness, the reaction you've experienced before. It doesn't come. Your skin is calm. This is suspicious — but good.
Stage 2 · Week 3–5
Softer edges
The edges of your spots are softer. Not dramatic, but there. You take a side-by-side photo and the difference is real. You start to believe.
Stage 3 · Week 6–8
Visibly faded
The spots have visibly faded. Not gone — but significantly lighter. You're telling your friend. She wants the link.
Why Sans défaut?
Dark Spot vs Other brands
Sans défaut
Other brandsFrequently asked questions