If by waterproof you mean water-repellent, then yes.
Keratin is found in hair and nails. And rhinocerous horns.
Yes
skin.melanin is the pigment for skin colour and keratin gives elasticity to the skin. keratin is also in hair and fingernail...it is in basicaly every part of your body because it is mainly protein.
Keratin
Keratin is the protein that strengthens and waterproofs the epidermal layer of the skin.
keratin
If by waterproof you mean water-repellent, then yes.
Keratin.
Nails are made of up the protein called keratin, which is a tough and insoluble structual protein. It is basically dead skin cells.
Keratin
Keratin
keratin
Keratin
The protein that helps to make the skin of a vertebrate tougher and more waterproof is called keratin. Keratin is also the primary structural component of nails and hair.
Keratin is the protein in the epidermis that helps protect the skin and underlying tissue. Keratin is strong and waterproof.
keratin