Synopsis

Source of validity: Scientific
Rating (out of 5): 3

Lanolin is commonly used in diaper rash ointments and creams, and its use has scientific support, although the evidence is moderate rather than robust. Lanolin is a natural, waxy substance derived from sheep’s wool. It acts as an emollient and occlusive agent, helping to moisturize the skin and form a protective barrier against irritants such as urine and feces. This barrier function is crucial in preventing and treating diaper rash, as it reduces skin exposure to moisture and friction—two primary contributors to diaper dermatitis.

Several clinical guidelines and dermatological references recommend the use of lanolin-containing products for mild to moderate diaper rash. For instance, a review published in Pediatric Dermatology (2008) cites lanolin-based ointments as beneficial for maintaining skin hydration and protecting the skin barrier in infants. Additionally, purified, medical-grade lanolin is considered to have a low risk of sensitization and allergic reaction, making it suitable for infant skin when compared to less refined forms.

However, while the theoretical basis for lanolin’s use is strong and small clinical studies support its protective and soothing effects, there are relatively few large-scale, high-quality randomized controlled trials directly evaluating lanolin for diaper rash. Most recommendations are extrapolated from its general properties as an emollient and barrier agent. Thus, its use is scientifically justified but supported by moderate-quality evidence.

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