Search
for

    Sort by

    Learn 31–35 of 39

    1. Caffeine Stimulant used in hair shampoos and lotions
    2. Biotin B vitamin, often sold as a hair supplement
    3. Metformin Diabetes drug that lowers blood sugar
    4. Follistatin Protein that blocks activin, a growth-regulating signal
    5. Alopecia Areata autoimmune disorder causing patchy hair loss