Good for hair
I purchased specifically for nails and hair.  Since Covid, I let my nails grow out.  I had gel powder for over 20+ years and since they no longer have gel, they split and chip and just won't grow.  I'm on my third bottle and my hair seems fuller and a bit thicker but it hasn't done anything for my nails.  I will continue taking it, as sometimes it takes longer than a few months to notice a difference.
Rating: 4 stars