enzyme required to produce vitamin C, so it must be received from outside sources.
The active form of vitamin C, L ascorbic acid, is responsible for physiologic actions. Aside from retinoids, vitamin C is likely the most researched component in skincare. Ascorbic acid has several advantages. Repeated investigations have demonstrated that it aids in the prevention of photodamage caused by UVA and UVB radiation. It increases collagen formation by acting as a cofactor for collagen-producing enzymes. Finally, vitamin C is an excellent lightning agent. It inhibits tyrosinase, a crucial enzyme in the formation of melanin.
Vitamin C, on the other hand, is extremely unstable. It quickly oxidizes in the presence of light, heat, pH change, and other ions. As a result, several vitamin C compounds that are more stable while retaining potency have been developed. Nevertheless, formulation remains a difficulty. The efficiency of ingredients must be demonstrated not just in the laboratory or on animals, but also in human skin. Sadly, there is a scarcity of information about skincare components in general, and some publications are contradictory. One research may reveal that a derivative is beneficial, while another shows that it is ineffective. This refers to the difficulties of producing L ascorbic acid since the formulation is important.