Growild Caviar & Black Seed Oil is a rich source of vitamin A and vitamin D along with omega-3 fatty acids. Vitamin A helps to produce healthy sebum, which will prevent your hair from drying out and breaking off. A deficiency in vitamin D may lead to hair loss and omega-3 fatty acids may help reduce hair loss. It also has zinc, which is essential to your immune system and strengthens the hair follicles to help prevent certain types of hair loss.