To use hair serums effectively, a person should wash their hair and warm up the serum before applying it. They should avoid applying the serum to the hair roots, overapplication, and rinsing the serum ...

You’ve just run a comb through your hair, and there it is another snapped strand, frizzy ends, and a dull finish. Frustrating, right? Like many, you probably reach for that glassy bottle of hair serum ...