Keratin

Keratin is the primary structural protein that makes up the outer layer of skin, as well as hair and nails. It forms the scaffolding of the skin's surface — the stratum corneum — providing strength, resilience, and protection against environmental damage. When keratin is healthy and intact, skin looks smooth, firm, and well-defended. When it is depleted or damaged, skin becomes rough, fragile, and more vulnerable to moisture loss and irritation.

In hair, keratin is equally foundational. Each strand is composed almost entirely of keratin proteins arranged in a tightly coiled structure. Heat styling, chemical treatments, UV exposure, and environmental stress can break down these protein bonds, leading to frizz, breakage, dullness, and loss of elasticity.

Keratin-infused skincare and hair care formulas work by replenishing and reinforcing this essential protein where it has been depleted:

• Skin structure support — strengthens the skin's surface layer, improving resilience and reducing sensitivity to environmental stressors
• Smoothing — fills in micro-gaps in the skin and hair cuticle for a visibly smoother, more refined appearance
• Frizz control — in hair care, keratin smooths the cuticle layer to reduce frizz and improve manageability in humidity
• Shine enhancement — a smooth, intact cuticle reflects light more evenly, resulting in visibly shinier, healthier-looking hair
• Breakage reduction — reinforces weakened hair strands to reduce breakage and support length retention

At PUR Botanicals, our keratin formulas are designed for both skin and hair, delivering targeted protein replenishment that strengthens from the surface in. Explore our keratin-powered botanical formulas for stronger, smoother, more resilient skin and hair.