Onion oil for hair fall contains quercetin, a natural antioxidant that keeps free radicals under control, preventing premature greying and other signs of ageing in your hair. Bhringraj fast hair growth oil repairs dry, damaged and frizzy hair by sealing the cuticles and restoring shine and lustre. Massaging tea tree hair growth oil into your scalp and all over your hair each night is a proven natural way to help improve hair growth in women and men.