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Petroleum jelly—also known by the popular brand name Vaseline—is one of the most versatile skincare products ever created. Despite being over 150 years old, it remains a staple in millions of households and for good reason: it’s affordable, multipurpose, safe for most skin types, and highly effective at moisturizing and protecting the skin.
What Is Petroleum Jelly and How Does It Work?
Petroleum jelly is a semi-solid mixture of mineral oils and waxes that forms an occlusive barrier over the skin. This means it locks in moisture by preventing water from evaporating from the skin’s surface. Unlike many moisturizers, which add hydration through humectants (like glycerin) or replenish lipids with emollients (like ceramides and oils), petroleum jelly primarily prevents moisture loss.
Why occlusion matters
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