Sprayway #50 glass cleaner is;

• The most versatile glass cleaner available - dissolves dirt, grease, grit, and grime.

• Heavy-duty foam clings to vertical surfaces.

• Contains perfume-grade alcohol for best performance.

• Guaranteed to leave no film on newly-installed mirrors, windows, windshields.
• The perfect cleaner for your helmet. Bugs simply dissolve.
  

Spray it on, let it sit for a few minutes, wipe it off. Being ammonia free, it will not harm your helmet, windscreen, mirrors.