Bis-Glyceryl Ascorbate

Bis-glyceryl ascorbate is a stabilised form of vitamin C (ascorbic acid) modified with glycerol molecules. This modification makes it more shelf-stable and water-soluble than pure ascorbic acid, allowing it to remain effective in formulations without the degradation issues that limit raw vitamin C.In skincare, it functions as both an antioxidant and a humectant. As an antioxidant, it helps neutralise free radicals that damage skin cells. As a humectant, it draws moisture into the skin, supporting hydration alongside its protective benefits.

Bis-glyceryl ascorbate works through two complementary mechanisms. As an antioxidant, it donates electrons to neutralise free radicals—unstable molecules that can damage collagen, elastin and cell membranes. This protective action may help slow visible signs of ageing and environmental stress.The glycerol modification also gives it hydrating capacity. When applied topically, it draws water into the outer layers of the skin (the stratum corneum), improving moisture retention and skin feel. This dual action makes it gentler than some other vitamin C forms whilst still offering antioxidant ben…

Bis-glyceryl ascorbate can typically be used daily, both morning and evening, as part of a standard skincare routine. It is generally compatible with other actives, though as with any vitamin C product, allow time between application and other potentially irritating ingredients if you have sensitive skin. A light pat-in approach after cleansing and toning will optimise absorption.

Bis-glyceryl ascorbate is generally well-tolerated across skin types. As with other ascorbic acid derivatives, some individuals may experience mild irritation if used excessively or on very sensitive skin; start with lower frequency if new to vitamin C products.