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theskindex
Wednesday, October 14, 2026Index last updated Oct 14
The Index

Every ingredient, graded

INCI names in monospace, evidence grade at the row end, limits by region on every entry. Filter by what it does, what it's for, and where it's permitted.

IngredientEvidence
AdapaleneStrong
Glycolic acidModerate
Lactic acidModerate
NiacinamideStrong
RetinalModerate
RetinolStrong
Salicylic acidStrong
UreaStrong