Development Of A New Diaper Dermatitis-Like Reconstructed Skin Equivalent For Testing Children Atopic Dermatitis Relieving Cosmetics

Background Diaper dermatitis (DD) is the most common acute inflammatory skin disease. It has a serious effect on children's and families' quality of life. We aimed to screen and evaluate the efficacy of different formulas for relieving the diaper dermatitis symptoms by developing a kind of diaper dermatitis-like reconstructed human skin equivalent in vitro. Materials and Method We developed the human skin equivalent for diaper dermatitis with 0.2% Sodium lauryl sulfate (SLS). The diaper dermatitis-like human skin equivalent was characterized by high level of inflammation, such as overexpression of interleukin-1 alpha (IL-1 alpha), and impaired skin barrier. Four formulas with potential of anti-inflammation and promotion of skin barrier function were topically applied on the diaper dermatitis-like human skin equivalent surface. The afterward protection efficacy was evaluated by endpoints of IL-1 alpha, tissue viability, and skin barrier function. Results The chemical irritant induced high release of IL-1 alpha, impaired tissue viability, and skin barrier function. The cream prepared with potential of anti-inflammation and skin protection could effectively decrease and relive the impact of irritant with decreased level of IL-1 alpha and the higher tissue viability than the placebo exposure. Conclusion The results showed that diaper dermatitis-like human skin equivalent induced by SLS can mimic the skin irritation response of the diaper rash.