Top pick · DoseRank
Why this ranks #1 for nail strength
#1
Swanson Vitamins, Full Effect Hair Thickener, 60 Capsules
Swanson Vitamins$0.56 / serving4.6 · 1,048Available now
Why this ranks here
- Evidence fitEvidence is still thin for Biotin and Keratin.
- Dose fitDose-range data is not available for this formula yet.
- Price / serving$0.56 per serving — high price tier for this outcome.
- AvailabilityIn stock across major retailers; 99% availability confidence.
- TrustSolid trust signals from buyer ratings, with room to grow.
Trade-offs
Value for money trails the rest of this listTrust signals sit below the other picks
The numbers
88
95
85
53
4000 mcgThin evidenceevidence for this ingredient is still thin
600 mgThin evidenceevidence for this ingredient is still thin
150 mgThin evidenceevidence for this ingredient is still thin