Hair serum is a hair care solution which makes the hair shine and stops it from tangling. It protects the hair from the damages done by overexposure to the sun and hair styling products. The effect of the serum application remains until the next wash. It should be applied after a hair wash. Hair serum forms a thin protective layer on the hair strands. It returns the moisture lost due to exposure to sun or heat generated from the hair styling gadgets. It is primarily used for dry and frizzy hair, which breaks easily, or hairs that have under gone excessive chemical treatments like perming, coloring.