Retro-Brite uses the power of oxidation to bring your old, yellowed plastics back to life! Its perfect for restoring old computers, appliances, toys, antiques, electronics, showers/vanities, and gaming equipment. Simply spray Retro-Brite to yellowed plastics and cover, expose to sunlight for ~4 hours, then wash & dry! Full instructions are included on the back label. Each order comes with 16 ounces of Retro-Brite Spray Gel, which is chemically formulated to restore yellowed plastic. Works great on many types of yellowed plastics including colored plastics.Does not damage non-yellowed areas!. Works great on shoes!. Great for yellowed electronics, showers, tub jets, toys, and more!. Simple 3 Step Process: Spray, Expose, and Clean. Spray gel formulation for easy application and good coverage.