Vitamin C in cosmetics

Vitamin C has become a prominent ingredient in cosmetics, available in various forms such as serums, facial creams, and skin masks. It is either the sole active ingredient or combined with other components in these products.

Expert endorsement of vitamin C

According to Dr. Martine Baspeyras, a dermatologist, vitamin C is considered a serious active ingredient by health professionals, with many studies validating its effects on the skin. It helps neutralize free radicals caused by ultraviolet (UV) rays, pollution, and cellular functions, which contribute to skin aging.

Benefits and limitations of vitamin C

While vitamin C can help with photoaging, pigment irregularities, and improve skin radiance, it is not a miracle solution and will not provide the effect of a facelift. However, regular use can have a beneficial effect on wrinkles.

Optimal forms and concentrations of vitamin C

The best forms of vitamin C include creams, serums, and masks, with a preference for pure vitamin C, also known as "ascorbic acid" or "L-ascorbic." Concentrations of 8-10% are recommended initially to assess skin tolerance, with the possibility of increasing to 10-20% if well tolerated.

Usage and storage of vitamin C products

Vitamin C-based products can be used daily, ideally in the morning when the skin is most exposed to free radicals. A vitamin C serum can be applied first, followed by a daytime cream. However, it does not replace sunscreen, so an SPF protection should be applied every morning, even in winter.

Proper storage of vitamin C cosmetics

Proper storage of vitamin C-based cosmetics is essential, as vitamin C oxidizes quickly. Products should be stored in opaque bottles, kept closed, and away from heat. If a serum turns dark orange or brown, it should be discarded to avoid potential skin reactions.