But can it really make gray hair disappear, or is it just another beauty myth? Black sesame oil, extracted from these seeds, is thought to nourish the scalp, strengthen hair roots, and improve overall hair health. There is no strong scientific evidence proving that black sesame oil can completely reverse gray hair or restore pigment once it is lost. Consuming black sesame oil or seeds, as part of a balanced diet, provides nutrients that support hair health from within. So, can black sesame oil make gray hair disappear?