What it is
This copolymer is built on acryloyldimethyltaurate units in the sodium salt form and swells in water to form a stable gel network. In a sunscreen it thickens the aqueous phase and helps hold oil and water together, giving the product body and a uniform texture. It is valued for producing a light, smooth feel and for tolerating a range of formulation conditions.
Safety & warnings
Acryloyldimethyltaurate-based polymers are large surface-active gelling molecules generally regarded as well tolerated, with low irritation and sensitization potential at normal use levels. They are not comedogenic and contain no known fragrance allergens.
Origin & sourcing
Synthetic, made by polymerizing acrylic monomers including the acryloyldimethyltaurate salt.
Questions everyone asks
Why is this in my sunscreen?
It thickens the water phase and stabilizes the emulsion, giving the product a smooth, even consistency.
Does it provide UV protection?
No. It is a texture and stability ingredient, not a UV filter.