Shark liver oil is similar in many ways to other Omega-3 fish oil supplements we often use. In that sense, it’d stand to reason that shark oil would be good for hair growth as we know fish oils, in general, are great for promoting hair strength, promoting hair growth, and nourishing the scalp and hair follicles. There isn’t that much research done on shark liver oil’s effect on hair growth, in particular, however, so that’s to be taken with a grain of salt.