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Researched by Helena DeMaria-Williams

Formula IngredientEmollient, Emulsifier

Lecithin

INCI: Lecithin

Lecithin is a naturally occurring phospholipid complex found in all cell membranes, most commonly sourced from soybeans or egg yolks for cosmetic use. It functions as a multifunctional ingredient — acting as a softening emollient, a hydration booster that binds water to the skin, an emulsifier that stabilises oil-water formulations, and a liposome-forming agent that can enhance delivery of active ingredients deeper into the skin.

Category

Emollient, Emulsifier

Irritation Risk

Low

Skin Types

all skin types, dry, sensitive, mature, combination, oily

What does this do in a formula?

emollient, skin conditioning, hydration, emulsification, liposome formation for enhanced active ingredient delivery, barrier support

Is Lecithin safe? Key considerations

Can Lecithin cause irritation?

Low Risk

Lecithin is naturally present in the skin's own cell membranes, making it exceptionally biocompatible. It is not a known irritant or sensitiser at cosmetic concentrations. No EU CosIng Annex II or III restrictions apply. Reviewed as safe by the International Journal of Toxicology.

Does Lecithin increase sun sensitivity?

No Risk

Lecithin does not increase photosensitivity. No sun protection precautions are required based on its presence in a formulation.

Is Lecithin safe during pregnancy?

Safe

Lecithin is a naturally occurring component of cell membranes and is widely consumed as a food supplement. No reproductive or developmental toxicity concerns are documented for topical use at cosmetic concentrations. Considered safe during pregnancy.

How does Lecithin work?

Lecithin is a naturally occurring phospholipid complex found in all cell membranes, most commonly sourced from soybeans or egg yolks for cosmetic use. It functions as a multifunctional ingredient — acting as a softening emollient, a hydration booster that binds water to the skin, an emulsifier that stabilises oil-water formulations, and a liposome-forming agent that can enhance delivery of active ingredients deeper into the skin.

Individuals with soy allergy (most cosmetic lecithin is soy-derived) should review the considerations above before use.