A Compound Essential Oil Alters Stratum Corneum Structure, Potentially Promoting the Transdermal Permeation of Hydrophobic and Hydrophilic Ingredients

The stratum corneum (SC) is the main barrier of the skin, and cosmeceuticals are different from ordinary cosmetics in that they need to deliver active ingredients targeting specific skin problems through the SC into the deeper layers of the skin. Thus, we designed a compound essential oil (CEO) extracted from