The Muc-Off Cycle Cleaner Shampoo is the most effective cleaner in the Muc-Off range of shampoos. It does not contain hazardous acids or chemicals. This shampoo is incredibly fast and effective at breaking down dirt at a microscopic level while maintaining the finish of your bike. Safe on all surfaces, not scary on disc brakes and pads. Ideal for road, mountain, city, single speed or fixed-gear bikes.