Guide · Ingredient × Concern
AHA for hyperpigmentation.
AHA for hyperpigmentation — what the science actually says, what concentration is therapeutic, and which products in the Uwazia catalog pair the two. Evidence grade: moderate.
What the evidence says
Moderate evidence.
Several studies support the claim, with some inconsistency in conditions or outcomes.
That's our honest grade — not a marketing claim.
The science
What's actually happening.
How aha works
Smallest AHA molecule; penetrates rapidly; breaks bonds between dead skin cells in the stratum corneum.
Full ingredient pageWhat hyperpigmentation is
Excess melanin deposition triggered by UV, inflammation, hormones, or trauma. Melanocytes upregulate tyrosinase production, depositing melanin in epidermis or dermis.
Full concern pageWhat to look for
Reading a label for aha.
Therapeutic range
4–10%
Concentrations supported by clinical literature. Below this range, the active is functionally cosmetic.
Sun exposure
Photosensitizing.
Wear broad-spectrum SPF daily. Skipping sunscreen will accelerate the very pigmentation this active is trying to treat.
Watch for
- Stinging
- Photosensitivity
- Risk of PIH on melanin-rich skin if overused
Products · 1
Products that pair aha with hyperpigmentation.
Related guides
Adjacent pairings worth reading.
Other ingredients for hyperpigmentation
Other concerns aha addresses