Petrolatum sits in the occlusive category, but the reason it works is specific. Creates near-impermeable occlusive layer; gold-standard for TEWL reduction.
The scientific name is Petrolatum. Creates near-impermeable occlusive layer; gold-standard for TEWL reduction. This mechanism is consistent across properly formulated products, which means the real variable is concentration and delivery system.
Typical working concentration is 30–100% (ointments); 1–30% (creams). Best suited to all, especially dry/compromised barrier skin. Primary applications: moisture sealing, barrier repair, wound healing.
Works well with: All humectants and emollients.
Most effective occlusive known; non-comedogenic at cosmetic grades; misunderstood.