Petrolatum
페트롤라툼
Emollient that softens and smooths skin by forming a protective barrier.
What does Petrolatum do for skin?
Petrolatum functions as an occlusive agent by forming a hydrophobic, lipid-rich film on the skin surface. This physical barrier significantly reduces transepidermal water loss (TEWL) by preventing water evaporation from the stratum corneum. The resulting increase in water content within the stratum corneum enhances skin hydration, improves skin barrier function, and promotes repair of compromised skin.
Typical concentration: 5-100% (commonly 15-50% in emollient creams; 100% in pure products like petroleum jelly).
Is Petrolatum safe?
Petrolatum is widely considered safe and well-tolerated, with a very low potential for irritation or sensitization. The CIR Expert Panel has deemed cosmetic-grade petrolatum safe for use in cosmetics, and it is an FDA-approved OTC skin protectant. Highly refined grades used in cosmetics address historical concerns regarding polycyclic aromatic hydrocarbon (PAH) impurities.
What does the research say about Petrolatum?
Topical petrolatum and the stratum corneum barrier: an integrative review.
Czarnowicki T, et al. J Am Acad Dermatol. 2017 Mar;76(3):497-502.
Therapeutic effects of petrolatum-based moisturizer in atopic dermatitis: a systematic review.
Lv C, et al. J Cosmet Dermatol. 2021 Apr;20(4):1040-1049.
Enhancement of barrier repair by moisturizers: a study of 12 products.
Ghadially R, et al. J Am Acad Dermatol. 1999 Aug;41(2 Pt 1):204-10.