use for-Fiberglass,Acrylic,Porcelain,Enamel Tub/Showers. Wondering how to increase traction on your shower or bathtub? Fiberglass? – No Problem!, Porcelain – No Problem!, Tiles? – No Problem!. This one of a kind solution will increase the traction to any shower or bathtub in the world! Once applied, it will leave behind a textured clear coating on your floor. Application takes less than 2 minutes! 4-6 hours to dry before use. No fumes and non-toxic. Coverage is up to 10 sq. ft.