Nothing can stop any epoxy from yellowing over time, but Alumilite has added UV protection to this formula to stall the yellowing process. Durability is important when it comes to epoxy resins and you can achieve that with Amazing Clear Cast Plus, which cures to a durable and high gloss finish every time and is FDA compliant. Spice up your craft by adding some color to it. You can mix it with any dyes, alcoholic inks or other non-water-based colorants. There's no limit to what you can do with this crystal clear epoxy resin set. Everyone will appreciate the simplicity of 2-part kit. WARNING: This product can expose you to chemicals including Epichlorohydrin and Propyleneoxide, which are known to the State of California to cause cancer and/or reproductive harm. www.P65Warnings.ca.gov. Made in USA.