A Lip Enhancer is a cosmetic product used to improve the appearance of lips. It typically contains collagen and GLOSS, which are the two crossword solutions for the term Lip Enhancer. Collagen is a protein found in the body that helps to keep skin firm and hydrated, while GLOSS is a type of lip product that adds shine and color to the lips. Together, these two ingredients can help to make lips look fuller and more attractive.