Topical vitamin C or ascorbic acid is a popular vitamin being added to skin care products, because it is the most abundant antioxidant in the skin. The maximum concentration of topical L‐ascorbic acid for skin absorption is 20%.
What benefits can Vitamin C provide our skin?
Vitamin C is such a good product to have, it have important protective effects in the ageing process. It has really strong antioxidant properties that are used topically in dermatology to treat and prevent changes associated with photo-ageing. It protects the skin from oxidative stress by sequentially donating electrons to neutralise the free radicals. It can protect cells from free radicals so that the cells that are damaged can mature and repair themselves without any kind of abnormality.
So what does that mean?
It means that Vitamin C can reduce some of the signs of ageing, it can help discolouration, it can help with some fine lines because it stimulates collagen production, and it can help with redness in the skin because the antioxidant properties have anti-inflammatory benefits as well.
Therefore, Vit. C can also be used for the treatment of hyperpigmentation. It inhibits action of the enzyme tyrosinase, thereby decreasing the melanin formation.
Vit. C is essential for collagen biosynthesis. It has been proposed that Vit. C influences quantitative collagen synthesis in addition to stimulating qualitative changes in the collagen molecule.
Who should use topical Vitamin C?
Everyone will benefit from using a correctly formulated topical vitamin C preparation.
Are there any side effects to using Vitamin C?
It’s uncommon to hear of side effects, but Vit. C is an ascorbic acid, so it can cause a little stinging sensation, depending on the formulation. Most people tolerate it just fine.
Vit. C has many anti‐aging skin effects, not only as a potent antioxidant and mediator of photo‐damage and melanogenesis, but also through its roles in supporting collagen biosynthesis and stability, which provide renewal and anti‐inflammatory effects.