Please suggest tips for good healthy hair.and is the use of conditioner really necessary?please suggest a diet for healthy growth of hair.

Healthy hair: For healthy hair growth: Get adequate sleep,avoid excess sugar & fat in diet, v carbonated beverages, eat enough protein, exercise regularly. Biotin helps (but don't over do it). Insure you have adequate Iron (like kale & other dark green leafies), Omega 3 fatty acids (like walnuts) & vitamin E (fruits & vegetables). Avoid sulfates & formaldehyde in shampoos). Avoid excessive blow dry heat.