Today more than ever, mental health and self-care have been identified as rising trends in our societies and especially in cosmetics. People want to see the beauty industry focusing more on making them feel better, to improve self-esteem or to reduce stress.   An increasing number of scientific studies have established a bidirectional link between skin/hair and the psychological state of people. Skin and hair are the most noticeable parts of our body and thus are important for self-image and men...