Kosé Corporation and a Niigata University professor and his team have developed a three-dimensional epithelial model that reproduces the human lip, the area from the oral mucosa to the lips and surrounding skin, using cell culture. Kosé and the resaerchers says this will make it possible to verify efficacy and safety evaluations of cosmetic ingredients and products on a structure more similar to the actual lip area, which has been limited until now to verification using standard skin and oral...