Petrolatum

Also known as: Petroleum Jelly, White Petrolatum, Vaseline

Generally SafeocclusiveEWG: 1-4 (grade dependent)

The most effective occlusive moisturiser known, creating a near-impermeable barrier on skin.

How it works

Petrolatum is a semi-solid mixture of hydrocarbons derived from petroleum. It reduces transepidermal water loss (TEWL) by approximately 98% — the highest efficacy of any known occlusive. It does not add moisture but locks existing moisture in. Cosmetic-grade petrolatum is highly refined to remove polycyclic aromatic hydrocarbons.

Concentration note

Often used at 20–100% in ointments. Even small amounts in a formula provide significant occlusion.

Best for

Very dry skinCompromised barrierWound healingEczema

Avoid if

Acne-prone skin (comedogenic at high concentrations)Body areas prone to breakouts

Commonly found in

Healing ointmentsLip balmsBarrier creams

✅ Pairs well with

Ceramide NP Glycerin

Safety & restrictions

Cosmetic-grade (USP) petrolatum is considered safe. The EU requires proof of full refining before use. Non-cosmetic grades may contain carcinogenic polycyclic aromatic hydrocarbons.

Restricted / banned in:EU (only fully refined grades allowed)

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For informational purposes only. Not medical advice. Consult a dermatologist for personalised guidance.