I take Keratin and Biotin
I take Keratin and Biotin for my thinning hair. I've using them both for several years and while thinning never completely stops, my hair is in great shape and looks good on a daily basis, my nails are stronger too. I am almost 70. These pills are fine on an empty stomach, so I can take them morning or at bedtime. I would recommend taking both and see the improvement.