Keratin
May support hair and nail health. Evidence is mixed, so set expectations accordingly.
Verdict
5/10 Mixed
Evidence
Grade B / 100+ Studies
The No-BS Summary
8 things. 60 seconds. Everything you need.
WHAT IT DOES
May support hair and nail health.
DOES IT WORK?
5/10 Mixed. Keratin supplements might offer some support for hair and nail health, but the evidence is limited and results can vary. It's not a magic bullet, but could be considered alongside other supplements and a balanced diet.
HOW MUCH TO TAKE
500 mg
COST
Mid-range. $35-50/month. Standard for most people.
FIRST 24 HOURS
Don't expect miracles on day one. It's building in your system.
AFTER A FEW WEEKS
Give it 4-8 weeks for full effects. Patience pays.
SAFETY
Few things to check: pregnancy, breastfeeding. Worth mentioning to your doc.
HOW IT FEELS
Users may notice subtle improvements in hair strength and nail thickness over time. Some may not notice any difference.
QUICK ANSWERS
+ 4 more questions
DOSE-RESPONSE CURVE
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