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Base & Functional

Zinc Oxide

BarrierSoothing
INCI: Zinc Oxide
In short · TL;DR
Category
Base & Functional
Effect
An inorganic (mineral) UV filter that scatters and absorbs UV radiation (UVA-UVB) to protect the skin
Concentration
Roughly a few % to about 25% in sunscreen formulations (the maximum permitted level depends on each country's regulations)
Effect
An inorganic (mineral) UV filter that scatters and absorbs UV radiation (UVA-UVB) to protect the skin
Mechanism
Particles reflect and scatter UV radiation and absorb a portion of it, reducing how much reaches the skin surface. Covers a broad wavelength range
Typical concentration
Roughly a few % to about 25% in sunscreen formulations (the maximum permitted level depends on each country's regulations)
Onset
Functions physically immediately after application
Cautions
Tends to leave a white cast. For nano-sized grades, check formulation and labeling rules. Drug-like efficacy claims are not permitted
Evidence & references
https://pubchem.ncbi.nlm.nih.gov/compound/3007857
Journal

Related Journal

4
Skin Longevity SeriesMidsummer UV Final Defense — Preparing for Four Layers: UVA, UVB, Visible Light & Near-InfraredSkin Longevity SeriesThe Science of Summer Acne—Sweat, Sebum, Clogged Pores, and the Ecology of C. acnesSkin Longevity SeriesThe Season-Change Switch: How the Autonomic Nervous System and the Skin Barrier Move TogetherSkin Longevity SeriesA Century of Beauty Research
This page is reference information and does not guarantee efficacy. Figures vary by test conditions (in vitro / manufacturer / concentration). It does not indicate pharmaceutical efficacy.
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