A Photostable UV-A Absorber Diethylamino Hydroxybenzoyl Hexyl Benzoate CAS:302776-68-7

DHHB is a novel oil-soluble UV filter with the following key features:

1. Broad UVA Coverage:

   • Effectively absorbs across the entire UVA spectrum (320–400 nm), addressing both UVA-I (340–400 nm) and UVA-II (320–340 nm).

2. High Protective Efficiency:

   • Boosts UVA Protection:

     • Adding 2.5% DHHB increases UVA Protection Factor (UVA-PF) from 2 to 5.

     • At 10% concentration, UVA-PF can reach 30, demonstrating exceptional dose-dependent efficacy.

   • Free Radical Defense:

     • Acts as an antioxidant by neutralizing free radicals generated under UV exposure, thereby reducing oxidative skin damage (e.g., collagen degradation).

3. Photostability:

   • Maintains >90% efficacy after 2 hours of UV exposure (MED testing), outperforming traditional UVA filters like avobenzone.

4. Applications:

   • Ideal for sunscreens, moisturizers, and anti-aging cosmetics requiring high UVA protection.

   • Compatible with both organic and inorganic (e.g., ZnO) UV filters for synergistic broad-spectrum protection.