I stand behind these vitamins 100%! As a gastric sleeve patient 5 years post op, I’ve tried all of the hair, skin, and nails products. After a month and a half the hair growth was so noticeable. I’ve also always had brittle nails and terrible cuticles. A big observance was my cuticle health was the strongest it has ever been and for the first time that I can remember, I wasn’t having dry broken skin around my nails. My favorite part about these vitamins is that I have actually visually SEEN my results!