What it is
Horse chestnut extract is valued in cosmetics for its content of saponins such as aescin and other plant constituents, which give it a conditioning and toning character on the skin. It is commonly included as a botanical that supports a smooth, refreshed feel. In sunscreens it contributes to the skin-care side of the formula and does not provide UV protection.
Safety & warnings
Horse chestnut extract is generally well tolerated in topical cosmetic use. As with other saponin-containing botanicals, very sensitive individuals may occasionally react, so patch testing is reasonable for reactive skin. It is not a known comedogen.
Origin & sourcing
Naturally derived from the horse chestnut tree (Aesculus hippocastanum), typically by extraction of the seeds or bark.
Questions everyone asks
What is horse chestnut extract used for in skin care?
It is used as a conditioning and toning botanical, often appreciated for its astringent, refreshing feel on the skin.
Does it add sun protection?
No. It is a skin-conditioning botanical; UV protection comes from the product's sunscreen filters.