The beauty industry is built on a secret: you are often paying for the packaging, the marketing, and the brand name—not the formula. DupeSleuth was built to level the playing field. We use advanced AI to act as your personal cosmetic chemist, analyzing the structural DNA, base formulations, and active ingredients of luxury cosmetics. We strip away the marketing hype to find you functional, chemical twins at a fraction of the cost.
Transparency is our core formula. DupeSleuth is a free tool for consumers. To keep our engine running, we participate in the Amazon Services LLC Associates Program. This means if you find a match you love and purchase it through our links, we may earn a small commission at zero additional cost to you. We only recommend products our engine verifies as structural or functional matches.