Onion Onions are rich in sulfur, which is essential for the production of collagen and keratin, two proteins that are important for hair growth. Rosemary Essential Oil Rosemary oil has antimicrobial properties that may help reduce dandruff and flakiness. Methi Seeds Fenugreek seeds contain proteins and nicotinic acid, which are believed to stimulate hair growth and strengthen hair follicles. it can help improve the overall texture and shine of the hair. Vitamin E Vitamin E can improve blood circulation in the scalp, which can promote hair growth. By increasing blood flow to the hair follicles, it helps deliver essential nutrients and oxygen to the hair, encouraging healthy hair growth.