Keratin vs creatine for hair
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Keratin: what your hair is made of
Keratin is a tough, fibrous protein that forms hair, nails and the outer layer of skin. In hair care you'll see it in:
- Keratin treatments: salon smoothing treatments that coat and straighten hair for weeks.
- Keratin shampoos and conditioners: help fill gaps in damaged cuticles so hair looks smoother.
- Keratin hair fibers: cosmetic fibers that cling to thinning hair to make it look fuller instantly. See hair fibers explained.
Keratin products improve how hair looks and feels. They don't regrow hair from thinning follicles.
Creatine: fuel for your muscles
Creatine helps regenerate ATP, the energy currency cells use during short, intense effort such as lifting and sprinting. It's made in the body, found in meat and fish, and taken as a supplement to improve strength and muscle. It has no structural role in hair. Creatine benefits.
Side by side
| Keratin | Creatine | |
|---|---|---|
| What it is | Structural protein | Amino acid derivative |
| Main role | Builds hair, nails and skin | Muscle energy (ATP) |
| Used as | Salon treatments, hair products, fibers | Sports supplement |
| Regrows hair? | No (cosmetic) | No |
| Causes hair loss? | No | Not shown in research |
What actually helps thinning hair
For real regrowth, look at evidence-backed treatments: minoxidil, finasteride, ketoconazole shampoo and laser therapy. Keratin fibers are great for instant cosmetic coverage while treatments work. Compare treatments.
Frequently asked questions
Is keratin or creatine better for hair?
Keratin is the protein hair is made of and is used in cosmetic treatments. Creatine is a muscle supplement and doesn't do anything for hair.
Does creatine help hair like keratin?
No. Creatine doesn't build or strengthen hair.
Keep reading
Does Creatine Cause Hair Loss?
The full answer, from the 2009 rugby study to the 2025 trial.
Read →Creatine Hair Loss Studies
Both key studies side by side: what they measured and what they didn't.
Read →Creatine and DHT
How DHT drives pattern hair loss and what creatine does (and doesn't) do to it.
Read →Creatine Hair Loss in Women
What women need to know about creatine and thinning hair.
Read →Is Creatine Hair Loss Reversible?
Shedding, stopping creatine and what actually comes back.
Read →Creatine and Finasteride
Can you take them together? What lifters on finasteride should know.
Read →Get the creatine & hair research updates
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