What it is
This is a superabsorbent acrylic polymer that swells dramatically in water to build viscosity and a stable gel network. In small amounts it thickens lotions, stabilizes emulsions, suspends actives, and gives a light, fresh, non-greasy feel.
Safety & warnings
A large surface polymer that is generally non-irritating; widely used across cosmetics.
Origin & sourcing
Synthetic polymer of acrylic acid (sodium salt).
Questions everyone asks
What does sodium polyacrylate do?
It thickens and stabilizes the formula and can give a light, gel-like texture.
Is it safe on skin?
Yes, it is a large molecule that stays on the surface and is well tolerated in cosmetics.