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Strong evidence

Niacinamide for Sun Damage (Photoaging)

A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.

Why it works for Sun Damage (Photoaging)

A form of vitamin B3 that helps the skin repair its barrier, and it stops pigment from being passed into surface skin cells, which fades sun spots. In a 12-week trial that treated one side of the face at 5 percent, it clearly reduced fine lines, dark patches, and dull yellowish tone compared with the plain cream. It is a core ingredient for sun-damaged skin: safe for every skin tone, it does not make skin sun-sensitive, and you can use it morning and night.

How Niacinamide works

Reduces transepidermal water loss, inhibits melanosome transfer, and dampens inflammatory cytokines.