What it is
Glyceryl ascorbate is formed by linking ascorbic acid (vitamin C) to glycerin, which improves its stability and water solubility compared with pure ascorbic acid. In formulas it acts as an antioxidant and skin-conditioning agent, and it is intended to release ascorbic acid in the skin. It is commonly included in moisturizing and brightening-positioned products, including some daytime sunscreens.
Safety & warnings
Vitamin C derivatives like glyceryl ascorbate are generally well tolerated and are used at modest levels in leave-on products. As with other ascorbic acid derivatives, sensitive individuals may occasionally experience mild irritation. It is not a known fragrance allergen and is not an oil, so comedogenicity is not a typical concern.
Origin & sourcing
Manufactured synthetically by esterifying ascorbic acid with glycerin; both starting materials can be derived from natural sources such as sugars and plant oils, but the finished ingredient is a processed derivative.
Questions everyone asks
What does glyceryl ascorbate do in a sunscreen?
It acts as a vitamin C derivative and antioxidant, supporting a skin-conditioning, brightening-positioned role alongside the UV filters that provide the sun protection.
Is glyceryl ascorbate the same as vitamin C?
It is a derivative of vitamin C (ascorbic acid) joined to glycerin for better stability and water compatibility, and it is intended to act as a source of ascorbic acid in the skin.