Interestingly, another phthalate, di-n-butyl phthalate, up-regulated skin hypersensitivity reactions via thymic stromal lymphopoietin, a cytokine known to activate the maturation of dendritic cells and recently associated with eczema, in mice (Larson et al. 2010; Shigeno et al. 2009). Here, TSLP is linked to Eczematoid dermatitis.