AUTEUR calls its skincare products 'Definitive' because each one is packed with all the active ingredients you'll need. This 'Definitive Serum' is formulated with Encapsulated Retinol and Bakuchiol to increase the turnover of cells and tackle fine lines. It's also powered by Ceramides and Hyaluronic Complex for instant hydration, while Lactic and Glycolic acids smooth out texture. - Comes in a recyclable, refillable glass bottle - Vegan-friendly