Topical applications of a novel formulation improve epidermal permeability barrier in chronologically aged humansZhao, Jia-Qing; Zhang, Yu-Li; Li, Yan-Jia; Zhang, Guo-Qiang*; Man, Mao-Qiang*Science Citation Index Expanded南方医科大学; 河北医科大学; 1摘要-关键词epidermal permeability barrier N-palmitoyl serinol stratum corneum hydration