The beauty vitamin.
Effective Dose
2-5mg
Onset
2-4 weeks
Cost
Budget
Cycle
As needed
7 things you need to know
What it does
The beauty vitamin.
Worth it?
7/10. Effective for deficiency, mixed for general enhancement.
How much to take
2-5mg
Price
Cheap (under $15/month)
How fast it works
Takes 2 to 4 weeks to notice
Safety
Check if: none (warn doctor before labs).
What people say
None.
VITAMIN
"None."
Research backing for this ingredient
Some evidence, more research needed
8+
Yes
Generally accepted with some debate
Improves brittle nail thickness and reduces splitting
3 small clinical trials (n=22 to n=45)
Reverses hair loss caused by biotin deficiency
Multiple clinical case series
Accelerates hair growth in healthy individuals
Systematic review (insufficient data)
"Effective for deficiency, mixed for general enhancement."
Essential for producing Keratin—the protein in hair and nails.
Products below minimum dose are likely ineffective
When
Any time
How
2-5mg
Food
With or without food
Long-term benefits over weeks to months
As needed
Check for specific interactions.
Biotin is categorized as a vitamin.
Scientific consensus score: 7/10.
Evidence quality: MODERATE.
Add Biotin to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.