Safe on all parts and surfaces including carbon fibreWill not harm seals, cables, brake pads or rotorsEffective road bike & mountain bike cleanerSafe on anodised metalAlkaline based and free from CFCs, solvents or acidsNano Tech Formula cleans on a molecular level100% BiodegradableMuc-Off Nano Tech Bike Cleaner uses revolutionary Nano Technology that breaks down dirt and grime on microscopic levels, while also caring for your bike\'s delicate finish. It\'s the most effective cleaner out there, and it doesn\'t need dangerous acids or chemicals. In fact, it\'s fully biodegradable, free from acids, CFC\'s and solvents, and it\'s alkaline based. It\'s safe on all surfaces, and it\'s even disc brake rotor and pad friendly. Muc-Off Nano Tech Bike Cleaner is ideal for road bikes, mountain bikes, fixed gear bikes and commuting bikes. Directions for use: 1 - Rinse bike thoroughly 2 - Spray Nano Tech Bike Cleaner onto the entire bike including components and leave for 3-5 minutes 3 - Agitate any stubborn grime with a brush or sponge 4 - Rinse entire bike thoroughly with fresh, clean water