Why should I use hair serum it and how do I apply it properly?

A hair serum is a silicone-based product that coats the surface of your hair. One of the main uses
of hair serum is that it makes the hair shinier and healthier.

How to apply it: Pour a few drops of the serum onto the palms of your hands then, using yoru
fingers, run along your hair. Apply the serum when your hair is damp or towel dried (not dripping
wet). Never use it on your scalp