Vitamin B12 Excellent Antioxydant Anti-âge Apaisant Vitamin B12 at a glance Antioxidant with benefits for skin barrier Can help relieve signs of sensitivity Stable form used in skin care: cyanocobalamin Naturally occurring forms: adenosylcobalamin and methylcobalamin Vitamin B12 description Vitamin B12 is an antioxidant renowned in skin care for its ability to address compromised skin barrier and help relieve signs of sensitivity. While naturally occurring forms of vitamin B12 exist (adenosylcobalamin and methylcobalamin), cyanocobalamin is the synthetic derivative commonly utilized in over-the-counter skin care products due to its superior stability and cost effectiveness. See cyanocobalamin for a deeper dive into the research behind this skin care ingredient. Related ingredients: Cyanocobalamin