Skin

Skin is the largest organ in the body. It is stretchy, waterproof and packed with nerves that carry messages to the brain. Skin act as out first defense against bacteria and other harmful substances.

how skin heals

As soon as your skin is cut, your body springs into action.

1. Blood starts to clot to stop the bleeding and forms a scab to protect the wound.
2. Beneath the surface, white blood cells attacks any germs that might have got into the cut.
3. New skin begins to form, starting from the outside edges and spreading towards the center.
4. When the skin has heeled, the scab dries up and falls off.

SKIN MELANIN

Melanin is a chemical that is produced in the epidermis. It gives our skin its colour. When our skin is exposed to the sunlight, the cells make more melanin to protect it from the Sun’s ultraviolet (UV) rays.

• Fair-skinned people have the least melanin. They often get freckles, which are small spots of melanin.
• People with olive skin produce a medium amount of melanin.
• Dark-skinned people have lots of melanin producing cells.