Some people use castor oil for hair growth, but evidence is limited. Castor oil contains ricinoleic acid, which may reduce scalp inflammation.

These are the best hair growth oils and serums for everything from fine hair to coarse hair to thinning and balding.

That's why a mousse, which has a light, airy texture, is ideal for fine or thin hair looking for more oomph. Heavy products, like gels, creams, and pomades, can make fine or thin hair appear flat or ...