COSHH stands for Control of substances hazardous to health. Manufacturers of products are duty bound by law to inform you of how to use a product, how not to miss-use it and what you need to do if you do miss-use it. Usually this comes in the form of instructions on the container it comes in. It may also be on a separate printed sheet. Some items are maked for professional use only in which case you can ask for a COSHH sheet from the supplier.
It is your duty as a professional nail technician or beautician to be up to date with new legislation.
The Nail School