Diethylamino Hydroxybenzoyl Hexyl Benzoate (DHHB) is a modern chemical UVA filter with an absorption range of 320 to 400 nm. DHHB provides reliable protection against long-wave UVA radiation—a major cause of premature skin aging—and, in combination with effective UVB filters, contributes to SPF performance. DHHB is oil-soluble and ideal for long-lasting sunscreen formulations.