Ingredient Library

Skincare Ingredient Library

Each page covers common uses, timing, formulation notes, precautions and published pairings.

The English edition contains 14 source-checked and editorially reviewed Ingredients.

CategorySuggested time

Showing 2 ingredients

AntioxidantsMorning

L-Ascorbic Acid

A well-studied form of vitamin C, although low-pH formulas can sting some skin.

AntioxidantsMorning or evening

A defined Centella-derived triterpene with its own cosmetic identity; it is not Cica, whole-plant Centella extract or TECA.