Synopsis

Source of validity: Scientific
Rating (out of 5): 4

Coating agents, such as petrolatum (petroleum jelly), dimethicone, or zinc oxide, are frequently used in the management of dermatitis, including atopic dermatitis and contact dermatitis. The primary rationale for their use is based on their ability to form a protective, semi-occlusive barrier over the skin. This barrier helps to reduce transepidermal water loss (TEWL), thus improving skin hydration and supporting the repair of the disrupted skin barrier commonly seen in dermatitis. Moreover, by shielding the skin from external irritants and allergens, coating agents can help reduce inflammation and prevent further exacerbation of symptoms.

Scientific evidence supporting the use of coating agents in dermatitis is robust. Numerous clinical guidelines, including those from the American Academy of Dermatology and the European Dermatology Forum, recommend the use of emollients and barrier creams as first-line or adjunctive therapy in dermatitis management. Randomized controlled trials have demonstrated that regular application of coating agents reduces the frequency and severity of eczema flares, decreases itching, and improves overall skin condition. Furthermore, these agents are generally well-tolerated and have a favorable safety profile, making them suitable for long-term use, including in children.

In summary, there is substantial scientific validation for the use of coating agents in the treatment and support of dermatitis, primarily due to their barrier-enhancing and protective properties.

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