The Keratin Complex Infusion Keratin Replenisher is a 4oz tube of serum formulated with Keratin Oil to provide smoothing effects for all hair types. This cruelty-free product, made in the United States, is designed for unisex use and comes in a standard size. The Keratin Complex brand ensures high quality and effectiveness, making it a great choice for those looking to replenish their hair with keratin for a sleek and healthy finish. *NEW AND SEALED date on top says 5/2025*