Le Mieux Cosmetics (meaning "the best" in French) is a professional-grade skincare company founded in 2004 by Janel Luu alongside a team of scientists, physicians, and chemists specializing in advanced cosmetic formulation technology. Based in the United States, Le Mieux develops skincare products designed for use by professional estheticians, dermatologists, and skincare enthusiasts, with a focus on serum-based formulations incorporating ingredients such as epidermal growth factors, peptides, hyaluronic acid, vitamin C, and ceramides. The brand's product portfolio includes serums, creams, masks, and post-procedure skincare solutions, with signature products like the TGF-β Booster, StemCell EGF ampoules, Collagen Peptide Serum, and Bio Cell Rejuvenating Cream gaining recognition in the professional skincare market. Le Mieux emphasizes clinical testing and formulation science, positioning itself as a brand trusted by skincare professionals worldwide and featured in publications such as Vogue, Allure, and Refinery29. Their products are distributed through professional channels, spas, medical offices, and authorized online retailers, including Lang Wellness, which carries Le Mieux products as part of a curated professional skincare collection but does not manufacture or own the Le Mieux brand.