human
I've been hearing a lot of buzz about a new type of hair care product called "hair serum." What is it, and is it safe to use?
assistant
Hair serums are products designed to be applied directly to the scalp and hair. They contain ingredients such as vitamins and oils that help nourish and condition the hair. They can also help reduce split ends and frizziness. Some people find them helpful in improving their hair's texture and shine.