Starbrite Sail and Canvas Cleaner. Biodegradable formula safely cleans and brightens all types of white and colored sails/fabrics. Features Biodegradable. Cleans and brightens whites and colors. Concentrated formula. Safe and easy to use. Removes dirt, grease and mildew stains from sails, canvas and fabrics Great for boat covers, bimini tops and sails. Does not weaken fabric or thread. Also cleans nylon or dacron sails. Brightens whites and colors 500 mL