Glossary · Formulation
What Is Occlusive?
An occlusive is an ingredient that slows water loss from the skin by forming a film on its surface. Petrolatum, mineral oil, dimethicone and many waxes act this way. Occlusives are why a heavy balm feels protective and a light lotion does not, and they are central to barrier-repair positioning.
Why it matters when you source
Occlusivity is a texture-versus-performance trade: more occlusive usually means richer and slower to absorb. Knowing which of your hero ingredients is actually occlusive prevents briefs that ask for a balm's protection in a lotion's feel.
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