Soothing

Diethylamino Hydroxybenzoyl Hexyl Benzoate

DHHB (Uvinul A Plus) — the most effective UVA filter with the widest absorption spectrum available in Europe. Photostable, stabilizes avobenzone and other unstable filters. A key ingredient in premium sunscreens for complete UVA protection.

UVA filterUvinul A PlusphotostableDHHB

✓ Safe

Comedogenic Rating

0/5

Irritation Potential

0/5

What is it?

DHHB — an oil-soluble UVA filter with a peak absorption at ~354 nm and broad coverage of UVA I (340–400 nm) and partially UVA II (320–340 nm). Maximum concentration in the EU: 10%. Photostable — does not decompose under UV irradiation. Not FDA approved. Often used in combination with ethylhexyl triazone (UVB) for complete broad-spectrum protection without additional filters.

Premium sunscreens in the EU and Asian markets with maximum UVA protection (PPD, PA+++). Especially important for products with an anti-aging and anti-pigmentation focus.

Key Benefits

✦

The widest UVA spectrum — complete protection against photoaging

UVA (320–400 nm) — the cause of photoaging, pigmentation, and increased melanoma risk. DHHB covers the entire range of UVA I and UVA II with a peak at 354 nm. Most avobenzone-based formulas have a gap at >380 nm — DHHB closes this gap. For anti-aging cosmetics with SPF, this is critical: it is the long-wavelength UVA I that penetrates deepest and causes the most damage to the dermis.

◈

Photostability — maintaining protection throughout the day

Avobenzone — an effective UVA filter, but decomposes under UV (especially in the presence of BMDBM and some UVB filters). DHHB is photostable itself and stabilizes avobenzone in combined formulas. The result: sunscreen with DHHB maintains UVA protection throughout the entire wear time, while avobenzone-only formulas lose up to 50% UVA effectiveness in 1–2 hours.

✧

Lightweight texture and compatibility with premium components

DHHB has a low molecular weight and good sensory characteristics — it does not feel heavy or greasy in the formula. Oil-soluble, well dissolves in standard oils and silicones. Does not negatively interact with antioxidants, peptides, and vitamin C. Allows for the creation of lightweight, non-greasy textures with maximum protection.

Suitable for

for all skin typesfor pigmented skinfor mature skin

Main Actions

✓ UVA protection (widest spectrum)✓ photostabilization of the formula✓ prevention of photoaging

Why UVA protection is as important as SPF

SPF measures protection from UVB (sunburn). UVA does not cause burns but penetrates deeper and is the main cause of photoaging, pigmentation, and skin cancer. In the EU, UVA protection must be at least 1/3 of SPF (PPD ≥ SPF/3). In Korea — PA+++ or PA++++. Sunscreens with DHHB + ethylhexyl triazone provide one of the best combinations in cosmetics without American compromises.

CategorySoothing Ingredients

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