"Kintsugi Hair" is a company that markets a line of hair supplements intended to provide women with scientifically-supported formulas that strengthen and beautify hair. The creator of Kintsugi Hair supplements, Paul Lindsey, is a self-described hair science expert and the owner of a top-rated salon in Beverly Hills. The company's most popular product is a volumizing serum treatment powered by marine extracts, premium polymers, and restorative protein compounds. The key active ingredients include proprietary blends developed by leading cosmetics laboratories. The company receives generally positive customer reviews, both on Reviewopedia and other review websites. The company has an A+ rating from the BBB, with a highly positive customer score of 4.5 / 5 stars from over 80 reviews. They also have only one customer complaint in the last 3 years, and none in the past year. Mostly positive customer experiences suggest that Kintsugi Hair products are effective for a variety of hair concerns, including hair loss, thinning, damage, and overall hair and nail health. Based on the evaluation of their leading product, Amplifying Glaze, it does seem that the company uses ingredients that have at least some clinical backing. Therefore, it can be said that "Kintsugi Hair" is legit.