New nail growth takes 3–6 months to fully replace, but many notice less breakage and better flexibility within 4–8 weeks of addressing the cause.
Are biotin supplements safe?
Yes—biotin is water-soluble and considered safe at typical doses (2,500–5,000 mcg). Still, check with your healthcare provider before starting.
When should I see a doctor for brittle nails?
If nails are painful, discolored, significantly thickened, or accompanied by fatigue, skin changes, or other symptoms, a medical evaluation is wise.
This article is for informational purposes only and is not a substitute for professional medical advice. Always consult your healthcare provider for personalized guidance.