I have some CnD from the ebo brand that I had for long time. The bottle had become distorted over time - this never happened before.
Anyway, I used it last week and I most always wear gloves when working with chemicals. I put on my disposable mechanic (nitrile) gloves on and the CnD made contact with finger tips. The finger tips looked like it melted a bit. The tip of fingers were rough. It melted the rubber or just reacted to the rubber material, I don't know....
I stopped using it and finished the job with the Rx instead.... BTW, how do you get rid of your old chemicals, old polishes and cleaners?