“Keratosis pilaris occurs when excess keratin, a protein in the skin, builds up within the hair follicles, resulting in bumps ...

If your nails are showing their age, try an intensive nail conditioner or a clinical nail serum that strengthens and hydrates ...

Skin is used for gas exchange. Thick keratin layer would restrict oxygen exchange and water absorption ... Amniotic egg appears very early in reptilian evolution. Egg has several special ...