If by waterproof you mean water-repellent, then yes.
The substance is called keratin. It is a fibrous structural protein that provides strength, structure, and waterproofing to the cells in the epidermis, which helps to protect the skin from damage and dehydration.
Integumentary system (skin)
Eledin found in the stratum lucidum layer will eventually form keratin, a tough, protective protein that helps waterproof the skin and hair. This process occurs as the keratinocytes move through the skin layers towards the surface and mature.
Keratin- fibrous protein that makes up human skin, nails, hair etc.
Carbohydrates
Nails are made of up the protein called keratin, which is a tough and insoluble structual protein. It is basically dead skin cells.
The tough waterproof protein found in skin is called keratin. It forms a protective barrier on the surface of the skin, hair, and nails, providing strength and durability.
Keratin is the protein that strengthens and waterproofs the epidermal layer of the skin.
Keratin
Keratin
The protein in epidermal cells that makes the skin relatively waterproof is called keratin. Keratin is a strong protein that forms a barrier to prevent water loss and protect against environmental damage.
which is a protein that makes the skin waterproof
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.
The tough waterproof protein found in skin, hair, and nails is called keratin. Keratin provides structure and protection to these tissues.
Keratin is the protein in the epidermis that helps protect the skin and underlying tissue. Keratin is strong and waterproof.
keratin
Keratin is the waterproof protein predominant in the stratum corneum.