What it is
Phospholipids are amphiphilic molecules built from a glycerol backbone, two fatty acid chains, and a phosphate-containing head group, the same structural class that forms biological cell membranes. In cosmetic formulas they are commonly sourced from lecithin and are used to build liposomes, stabilize oil-in-water emulsions, and support delivery of other actives. They contribute to a smooth feel and help reinforce the appearance of the skin barrier.
Safety & warnings
Phospholipids are generally well tolerated and widely used in skin care. Lecithin-derived materials are recognized skin-conditioning ingredients with a long history of use; reactions are uncommon.
Origin & sourcing
Most cosmetic phospholipids are derived from natural lecithin, commonly extracted from soybeans or, less often, egg yolk; some grades are hydrogenated or purified, and synthetic phospholipids also exist.
Questions everyone asks
Where do cosmetic phospholipids come from?
They are most often derived from lecithin, typically extracted from soybeans, and purified for cosmetic use. Synthetic versions also exist.
What do phospholipids do in a sunscreen?
They act as emulsifiers and skin-conditioning agents, helping stabilize the emulsion, form liposomes, and contribute to a smooth, conditioned feel.