keratin

Why does our hair get silvery? It is said that when we are old, we have gray hair, but many people are young and still have gray hair. So what are the factors that make hair look

Nails are one of the characteristics that distinguish primates, including humans, and other mammals. They are essentially abraded claws.

The hands of children and young people will be wrinkled if soaked for a long time in the water while the hands of the elderly do not suffer. What is the cause of this phenomenon?

When bathing or soaking in water for a long time, your skin shows signs of wrinkling. Will they decompose?

Animals often run away or attack again when in danger. However, there are species that choose strange self-defense methods, such as fake death, curling their bodies or turning

Some clean-minded people may find it difficult to always cut their nails. However, have you ever wondered how long our nails can be?