Carrots Carrots not only help to sharpen your vision but also to maintain the health of your hair due to the presence of vitamin A. Existence of vitamin A helps in formation of sebum oil in the scalp – says Dr. Sandeep. Sebum is a very important element which helps to keep the scalp and hair very well moisturized. A moisturized scalp means healthy hair.The carrot is a root vegetable, usually orange in colour, though purple, black, red, white, and yellow cultivars exist. Carrots are a domesticated form of the wild carrot, Daucus carota, native to Europe and southwestern Asia.