Biotin Challenge Pt. 2 This part 2 of my Naturemade Biotin Challenge. Stay tune for more post on this channel also check more videos. And if you haven't subscribe yet now is your c… Related posts: 02 BIOTIN CHALLENGE!! (HOME VIDEO) 100 day Folic Acid and Biotin Challenge Day 40 Hair Growth Challenge Taking MSM & Biotin / Monthly Hair Growth Updates New Fall Hair Color How To-Everyday Curls