Vitamin C and its derivatives

Ascorbic acid is the form of vitamin C that is the purest. While highly effective, other forms—such as ascorbyl glucoside—are more stable and better tolerated by sensitive skin.

Yes, this is possible. Contrary to a widespread misconception, the vitamin C is not photosensitizing.

Yes, vitamin C can inhibit tyrosinase, the enzyme responsible for melanin production, which helps reduce brown spots and even out skin tone.

The duration of action of the vitamin C depends on the targeted concern: if it’s oxidative stress, only a few days, but for brown spots or wrinkles, it takes several months.

No, vitamin C cannot replace sunscreen, although its antioxidant action helps protect the skin from UV rays.

Contrary to popular belief, vitamin C can be paired with retinol, but this combination may prove mildly irritating for sensitive skin.

By neutralizing free radicals and stimulating collagen synthesis by fibroblasts, vitamin C helps prevent skin laxity.

Because of its acidity, the vitamin C pure may be poorly tolerated by sensitive skin. This is one of the reasons why vitamin C derivatives are often used in cosmetics.

Some studies suggest that vitamin C might help fade brown under-eye circles thanks to its brightening properties. However, it has no effect on vascular dark circles.