But aside from its healing properties, black cumin seed oil has a ton of benefits on the beauty front (plus, it has potential to help with sex drive). Here, six ways you can benefit from this ancient Egyptian wonder oil: Another study found that black cumin seed oil could help reduce hair loss—participants in the study found a 76% reduction in hair loss. Additionally, the oil can improve skin hydration and moisture1, according to a 2015 review. It seems like if there’s one oil you want to have in your beauty stash, you might want to make black cumin seed oil your go-to. (Check our full guide to black cumin seed oil for more information on weight loss.) Here are a few more foods to eat for long, healthy hair, plus exactly what to eat to boost your sex drive.