I have been using this toner along with another product for the past year, I have no had any problems with irritations to my skin. The spray nozzle on the bottles are sometimes off, when that happens I just transfer the toner into another bottle
I've been using this toner for a few years now, and now I can't live without it!!! I tried to go off it for a while and then my small bumps/pimples come back again. I typically use this this as my first step of my 3 step toning in the morning, then I follow it up by a more moisturising or viscous toner before I go into my essences/serums and creams. The spray nozzle is just right, that I sometimes re use the bottles for other skincare/makeup solutions.