Brittle hair causes

Improper diet or malnutrition is one of the main reasons of brittle hair. Just like our body, our hair also needs nutrition. Lack of essential nutrients like vitamin B, iodine, copper make the hair dry and brittle.Too much use of styling products, over use of blow dryer, relaxers, perms etc. can damage the hair. Even the chemicals used in shampoos can make the hair dry and brittle. Few medical conditions can also make the hair brittle. Conditions like anorexia nervosa, trichorrhexis nodosa, hypothyroidism, kwashiorkor, chemotherapy tend to make the hair frizzy, dry and fragile. Apart from these causes, one of the most common cause of dry brittle hair is environmental dryness. If you live in an area where the air lacks moisture and dry heat is common, then you might face the problem of brittle hair more frequently.