Best ingredients for dark spots: what each one does

Vitamin C: antioxidant (L-ascorbic acid and derivatives)

Use vitamin C to help neutralise free radicals from sun and pollution and brighten the look of uneven tone. It sits best morning, under sunscreen, around 10–15% L-ascorbic acid or 2–10% gentler derivatives, beginning daily if tolerated, every other day for sensitive skin.

Typical sensation: slight tingle on pure ascorbic forms, none with derivatives. Timeline: eight to twelve weeks for tone and brightness. Be careful with strong acids layered right before it.

Azelaic acid: dicarboxylic acid

The usual job of azelaic acid is to calm the look of redness, even out tone and help with post-blemish marks. Typical strength is 10% cosmetic, 15–20% typically prescribed, used morning or evening; start once daily after a week of every other day.

Typical sensation: tingling for the first weeks that eases. Timeline: six to twelve weeks for tone and redness. Be careful with other strong acids on the same night while adapting.

Alpha arbutin: pigment-targeting active

Use alpha arbutin to gradually fade the look of dark spots by softening pigment production. It sits best morning or evening, around 1–2%, beginning daily.

Typical sensation: light, non-irritating. Timeline: eight to twelve weeks. Be careful with skipping sun protection.

Putting them together without overdoing it

Do not start all of them in one week. Add the first, wait two to four weeks, then add the second. For dark spots, vitamin C usually goes first, alongside this adjustment: make SPF 50 non-negotiable and add one brightening active at night.

Avoid sun exposure without protection while you test.

Where to look when tracking dark spots

Whole-face impressions hide progress. Check each of these zones on its own, in the same light, once a week.

When dark spots pushes back

Most setbacks are predictable. Here is what to do about each.

Frequently asked questions