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  • Skin
  • Hair
  • Nails

Keratin

The Good Hair Day

  • Supports hair fullness and shine*
  • Supports nail strength*
  • Essential protein for hair, skin, and nails
  • Extracted from New Zealand wool
See supplement facts
Non-GMO
Non-GMO
Vegetarian
Vegetarian
Gluten-Free
Gluten-Free
The basics
Good Research
Good Research
Keratin is one of the most important structural proteins in the body and is an essential building block for hair, skin, and nails. Recent studies have shown that supplementing with keratin can help keep skin moisturized and smooth, encourage hair growth, and improve nail strength.*
The basics
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Did you know?

The keratin protein is only produced by chordates.This includes mammals, birds, fish, reptiles, and amphibians.

Research and benefits

View all research

Supports hair fullness and shine

Keratin is the main component in hair. Several studies have shown that taking keratin regularly can help support hair health.* In one study, participants who took keratin reported fuller, shinier hair and a significant decrease in hair fallout after 90 days.

Number of studies

1

Years of studies

2014

Double-blind placebo

No

Keratin is the main component in hair. Several studies have shown that taking keratin regularly can help support hair health.* In one study, participants who took keratin reported fuller, shinier hair and a significant decrease in hair fallout after 90 days.

Helps skin retain moisture and elasticity

Keratin is the main structural component in skin and is especially concentrated in the skin’s outermost layer, the protective barrier that helps keep it moisturized and protected from stressors. Recently, two placebo-controlled studies showed that people who took keratin for 90 days saw notable improvements in skin moisture, elasticity, and the appearance of wrinkles.*

Number of studies

1

Years of studies

2013

Double-blind placebo

No

Keratin is the main structural component in skin and is especially concentrated in the skin’s outermost layer, the protective barrier that helps keep it moisturized and protected from stressors. Recently, two placebo-controlled studies showed that people who took keratin for 90 days saw notable improvements in skin moisture, elasticity, and the appearance of wrinkles.*

Supports nail strength

Keratin is the main protein in nails and research has shown it can help with nail appearance and strength.* In one study, participants who supplemented with keratin for 90 days reported an improvement across all five parameters of nail health: breakage, strength, resistance, smoothness, and color.

Number of studies

1

Years of studies

2014

Double-blind placebo

No

Keratin is the main protein in nails and research has shown it can help with nail appearance and strength.* In one study, participants who supplemented with keratin for 90 days reported an improvement across all five parameters of nail health: breakage, strength, resistance, smoothness, and color.

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Smarter formulas

The highest quality wool

Because wool is a natural material that can vary between sheep flocks and breeds, our partners in New Zealand have strict quality protocols and work only with local farms that can consistently deliver the highest quality raw materials available.

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Better
ingredients

Our keratin is extracted from premium New Zealand wool, sheared from sheep during the summer, when they no longer need their thick fleece coats. Think of shearing like a haircut, where the sheep grow their coats back in full by the fall.

Sustainably sourced ·
Sustainably sourced ·
Frequently asked questions

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