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    Glossary Skin

    largest organ, acting as a protective barrier and sensory interface

    Skin is the body's largest organ, serving as a protective barrier against environmental hazards, regulating temperature, and enabling sensory perception. It consists of three main layers: the epidermis (outer layer), dermis (middle layer), and hypodermis (subcutaneous layer), each playing a crucial role in maintaining overall health and homeostasis.

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    1. GHK-Cu Copper peptide used in skin and hair cosmetics
    2. Vitamin D Vitamin made in the skin from sunlight, also taken as a supplement
    3. Peppermint herb and oil thought to stimulate skin and hair
    4. Hydrocortisone Mild corticosteroid used on the skin and scalp
    5. Dexpanthenol Provitamin B5, a moisturiser in hair and skin products