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 serum is a type of hair care product that is designed to nourish the hair. It typically contains vitamins and other nutrients that help promote healthy hair growth, reduce split ends, and protect the hair from environmental damage. Hair serum is usually applied after shampooing and before styling, and can be used on both wet and dry hair. It's generally considered to be safe to use, although you should always consult your doctor or dermatologist if you have any concerns about using certain products on your hair.