A good chemical free hair serum won’t just tame frizz. It will also add volume, shine and makes your hair feel smoother. A good hair serum also keeps split ends and hair fall at bay. When you are choosing a hair serum consider the hair troubles you want to fix and choose a hair serum accordingly. Some of the things a hair serum does is: Tame a frizz Reduce hair-fall Reduce split-ends Provide nourishment to hair Hydrate your hair