Vitamin D ●
TL;DR. This ingredient is primarily used as a skin-conditioning active, added to support the look and feel of skin rather than to preserve, cleanse, or emulsify a formula.
What does Vitamin D do in a cosmetic formula?
This ingredient is primarily used as a skin-conditioning active, added to support the look and feel of skin rather than to preserve, cleanse, or emulsify a formula.
Is Vitamin D clean?
It is generally low-irritation at cosmetic use levels and is not a common clean-standard restricted-list issue. The main clean-beauty caveats are source transparency and whether the material is animal-derived, fermentation-derived, or synthetically produced.
Is Vitamin D sustainable?
This material can come from animal-derived sterols, plant or fungal sterols, or synthetic processing, so its sustainability profile depends heavily on feedstock and supplier documentation. It is used at very low levels, which limits formula-level impact, but it is not usually treated as a standout renewable ingredient unless the source is clearly specified.
Is Vitamin D COSMOS-approved?
It may fit COSMOS-natural or COSMOS-organic formulas when the source and processing route meet standard requirements, but synthetic or animal-derived supply chains can create certification friction. From a Green Chemistry view, renewable sterol feedstocks and controlled photochemical conversion are preferable to less transparent synthetic routes.
How does Vitamin D work chemically?
The molecule is a fat-soluble secosteroid with conjugated double bonds, making it oil-soluble and sensitive to light, oxygen, and heat. It is typically used at very low levels, often well below 0.1%, and is best formulated in the oil phase or cool-down phase with protection from oxidation.
Last updated 2026-05-14