BIOTIN by Nutrafeel Beauty | HIGH Potent Formula Enriched with Vitamin B Complex | Stronger Natural Hair Growth (All Types), Stronger Nails and Healthier Skin | Made in USA!

Is a safe vitamin. I don’t feel any kind of side effects. Now is my supplement for my hair loss and nails. I feel so diferent; my hair is more shine and strong, also my nails. My skin is more soft.