What it is
PEG-6 Caprylic/Capric Glycerides is made by reacting glycerides of caprylic (C8) and capric (C10) fatty acids with about six units of ethylene oxide. The result is an amphiphilic material that works as a mild nonionic emulsifier and solubilizer while also lending a light, conditioning feel to the skin. It is used in sunscreens and other leave-on products to disperse oils and UV filters and to refine texture.
Safety & warnings
This ingredient is generally well tolerated and is regarded as low in irritation potential at cosmetic use levels. As an ethoxylated material, it should be sourced from suppliers that control residual 1,4-dioxane. It is not a recognized fragrance allergen, though the medium-chain glyceride backbone is mild rather than highly occlusive.
Origin & sourcing
Semi-synthetic. The caprylic and capric fatty acid portions are typically sourced from plant oils such as coconut or palm kernel, combined with glycerin and then ethoxylated.
Questions everyone asks
What are caprylic and capric glycerides?
They are esters of medium-chain fatty acids (C8 and C10) with glycerin, commonly derived from coconut or palm kernel oil.
Does it have any benefit beyond emulsifying?
Besides solubilizing oils, it can give a light skin-conditioning feel that helps soften the texture of a formula.