Vatika black oil for hair. For thousands of years, the world has recognized the tremendous healing properties of the legendary herb Nigella sativa, and its seeds are widely considered “seeds of blessing.” Black seed contains many amino acids, fatty acids, minerals and carbohydrates and has been scientifically formulated to produce healthy, strong, shiny hair, and extra nourishment. Problem-free hair. Black seed herb strengthens hair strands, adds shine and makes hair look healthy.