Ingredients
What Hyaluronic Acid Actually Does, and How to Apply It Right
Hyaluronic acid pulls water into the outer layer of skin, and it works best pressed onto damp skin and sealed in with a moisturizer.
Ingredients
Ingredients decodes the label: what retinoids, acids, vitamin C, niacinamide and peptides actually do, at which concentrations, and how many weeks each needs. Entries flag combinations that irritate when layered on one night. Written for readers building a routine from ingredients rather than brand names.