Updated: Sep 19
Density refers to the number of strands that are on your head or the number of hairs found in 1 square inch of your scalp. Some scalps have several strands growing out of 1 pore. The best way to determine the density of your hair is to stand and face the mirror and part your hair. Can you see your scalp without having to move any hair? If you can, then more then likely you have low-density (thin) hair. If you can see a little bit of your scalp then its medium-density and if you can't see any scalp then you have high-density (thick)hair. With low-density (thin) hair, you should use light products that won't weigh your hair down and also cause buildup. The opposite for high-density hair, use products that are heavy enough to mold your curls into shape and maintain it.