The main benefits attributed to hair treatment serums or hair oils are their moisturising and repairing effect, frizz control, shine and protection against tools such as straighteners and hairdryers, external factors such as the sun, pollution and free radicals.
How is a hair serum or hair oil used?
A hair serum or hair oil is not applied to all hair equally, nor to all hair types. For those with oily hair, it should be limited to the ends (to control frizz and combat dryness and split ends). On the other hand, those with rather dry hair (such as very curly hair) can use it from the mid-lengths to the ends.
It can be applied to damp hair (after towel drying) or dry hair.