Diethylamino Hydroxybenzoyl Hexyl Benzoate

Diethylamino hydroxybenzoyl hexyl benzoate (DHHB, Uvinul A Plus) is the full INCI of the leading photostable UVA-I filter. Its absorption maximum near 354 nm with coverage to 400 nm closes the gap long left by unstable avobenzone, and it does so without significant degradation over a day of sun. Oil-soluble and gentle, it rarely causes filter allergy and integrates easily into elegant European and Asian sunscreen textures at up to 10%. For consumers, its presence on a label signals serious UVA engineering. Pair with UVB filters and apply the full two-finger dose — filter quality only matters if quantity is sufficient.