What it does: Keratin provides structure, strength, and protection to epithelial cells, playing a key role in keeping hair and nails strong and resistant to splitting or environmental damage.
How it is used: It is commonly taken as a supplement by those seeking to improve hair and nail appearance, boost thickness, or support recovery from brittleness due to aging, environmental exposure, or chemical treatments.
Natural sources and supplement forms: Keratin is found naturally in animal-based materials like hooves, feathers, and wool. Supplements typically use hydrolyzed keratin, which is broken down for better absorption, and are available as capsules, powders, or tablets.
Why it appears in supplement formulas: Keratin is included to help reinforce the body’s own keratin supply, especially in individuals experiencing weak, thin, or fragile hair and nails, aiming to restore structural support.
What to know before use: People with allergies to animal products should exercise caution, as most supplemental keratin is derived from animal sources.
Interesting Fact
Keratin: The Protein Behind Strong Hair and Nails
Keratin is a tough, fibrous protein naturally found in your hair, skin, and nails—it's what gives them their strength and resilience. Because of this role, keratin is a popular ingredient in many supplements designed to support the appearance and structure of hair and nails, helping to replenish this natural building block from within.
