May support hair and nail health.
No. It's about strength and quality, not speed. Don't expect faster growth.
Different. Biotin is a B-vitamin involved in production. Keratin is the actual protein structure itself. They're often taken together.
Yes, and you should. A good diet is more important. Keratin supplements just provide a very specific type of protein. It's a targeted approach, but not necessarily better.
Click through to the studies bar for the evidence base.
See the dosing guide below.
Compare formats before buying.
Some ingredients build up over weeks. Others act fast.
The compound effect of consistent dosing.
Check the cautions section if you have a pre-existing condition.
Some ingredients you feel. Others just work in the background.
If it works for you, 2-3 months minimum. Hair and nails grow slowly. Patience is required.
Usually not. Most keratin is sourced from sheep's wool. Check the label for plant-based or 'vegan keratin' alternatives if that's a concern.
Extremely rare. It's just protein. Some people might get an upset stomach, but that's about it.
Most research uses 0.5g daily. Below 0.5g, you're probably wasting money. Above 1.5g, no extra benefit. The curve plateaus. Safe upper limit ~ 2.5g.
Keratin provides amino acids that support the structure of hair and nails.
The evidence supporting keratin supplementation is mixed, with some studies showing benefits while others report no significant effects. More research is needed to confirm its efficacy.
Hair, skin, nails, horns, and wool of mammals.
Keratin interacts with other supplements and meds. The analyzer flags interactions, dose mismatches, and timing collisions across your whole list.
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This information is for educational purposes only and is not intended to diagnose, treat, cure, or prevent any disease. Consult your healthcare provider before starting any supplement regimen.