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DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE.

Essential CAS 302776-68-7 / LIGHT STABILIZER, UV ABSORBER, UV FILTER

DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE (DHHB) is an organic UV-A filter providing broad-spectrum protection against photodamage. It effectively prevents sunburn, photoaging, and reduces the risk of skin cancer.

sunscreen UV filter UV absorber light stabilizer

Science

DHHB forms an invisible protective shield in the stratum corneum, absorbing UVA radiation (320-400 nm, peak at 354 nm) and releasing it as harmless energy. This action minimizes UV exposure, protects against free radicals, and exhibits anti-inflammatory effects.


Research

High confidence
Effective range 3.5–10%
Optimal

10%

Key findings

  1. 01 Considered safe and highly effective as a UV filter, minimizing acute and chronic photodamage and preventing sunburn, photoaging, and skin cancer.
  2. 02 Achieves over 50% reduction of full-spectrum UV-induced free radicals, with performance comparable to 5% BMDBM.
  3. 03 In vitro, topical application demonstrated a significant anti-inflammatory effect, inhibiting edema formation by approximately 70% in mouse ears.

Transparency

Not commonly dusted

The Formula

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

DHHB demonstrates excellent photostability and chemical stability, maintaining its sunscreen effect for extended periods. It is oil-soluble, easily incorporating into emulsion's oil phase, and contributes to light, non-greasy formulations without white residue.

Synergies

  • Good compatibility with other UV filters, enhancing their photostability.

Conflicts

  • Does not significantly enhance avobenzone's photostability, interacting via a static quenching mechanism.

Safety

CIR Status
Not reviewed
Max tested
10%
Sensitization risk Low

The European SCCS deems DHHB safe for skin use up to 10% (w/w), citing low allergenic and irritant potential with minor percutaneous absorption. It is not currently available as a sunscreen agent in the United States due to FDA regulations.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Low

Our Assessment

Essential

DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE is an essential and highly effective UVA filter, crucial for comprehensive sun protection in a wide range of cosmetic formulations.


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