Shaun, as with all chemicals you use, ask the supplying company for a COSHH sheet. These should then be kept in a folder on your van just in case you get a chemical in your eyes or on your skin. If you should need hospital treatment these sheets will be invaluble.
These sheets will also tell you the main 'ingredients' used in the composition.
JB- Shame women don't come with a risk assessment & COSHH sheet, it would be much easier to choose the right one. We could see all chemical compositions at a glance, then try and find one thats balanced.
I'm in trouble now!!