Brittle nails, thin and dull hair and bad skin can be due to several different reasons, such as too much stress or too little sleep . But it can also be due to a vitamin deficiency. In this category you will find nutritional supplements designed to maintain normal hair, skin and nails. We get most of what the body needs through diet, but sometimes you may need to supplement your diet with supplements. This could be, for example, if for some reason you do not eat a sufficiently versatile diet and therefore do not get all the nutrients. Examples of vitamins, minerals and proteins that contribute to normal hair, skin and nails are collagen, biotin and zinc. Collagen is a protein found naturally in the body. It is found, among other things, in the hair, skin and nails. Collagen production decreases with age, so some people choose to take supplements with collagen to, for example, maintain supple skin. Biotin is a vitamin found in most foods, such as liver, egg yolk and oatmeal. Zinc is a mineral that you find in foods such as meat, dairy products and whole grain products. Biotin and Zinc contribute to normal hair growth, normal nails and normal skin.