What it is
Cholecalciferol is the D3 form of vitamin D, a fat-soluble compound included in some skincare and sun-care products as a skin-conditioning ingredient. In cosmetics it is used at low levels and is valued for its compatibility with oil-phase formulations. It is oil-soluble and typically incorporated into the lipid portion of a product.
Safety & warnings
Used topically at low concentrations in cosmetics as a conditioning agent. As a fat-soluble vitamin it is light- and oxygen-sensitive, so formulas containing it are usually protected from air and light.
Origin & sourcing
Can be sourced from animal-derived materials such as lanolin (sheep wool grease) exposed to ultraviolet light, or produced synthetically.
Questions everyone asks
What does cholecalciferol do in skincare?
It functions as a skin-conditioning agent and is the vitamin D3 form, included at low levels in some sun-care and moisturizing products.
Is cholecalciferol oil- or water-soluble?
It is fat-soluble, so it is incorporated into the oil phase of a cosmetic formula.