Uv
Uvinul A Plus
Diethylamino Hydroxybenzoyl Hexyl BenzoateSPF filter
Modern photostable UVA filter. Dedicated long-wavelength UVA coverage; approved in EU/AU/JP, not the US.
What it does
Uvinul A Plus is a dedicated long-wavelength UVA filter (covers UVA1, including 380–400 nm where most sunscreens lose protection). Highly photostable; doesn't degrade in sunlight. Common in modern EU and Japanese broad-spectrum sunscreens. Not US FDA-approved yet, which is part of why US sunscreens often underperform on UVA-1 testing.
The evidence, graded
expert consensusSunscreen must be the final AM step. Applying products on top of sunscreen disrupts the protective film and can compromise the labeled SPF.Petersen 2014 · Photodermatology, Photoimmunology & Photomedicine ↗
expert consensusSPF protection degrades under UV exposure. Reapply sunscreen every 2 hours during continuous sun exposure to maintain rated protection — and immediately after swimming, sweating, or towel-drying.Petersen 2014 · Photodermatology, Photoimmunology & Photomedicine ↗
Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.
Also known as
dhhb, diethylamino hydroxybenzoyl hexyl benzoate
Pairs worth knowing
This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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