The quick-fix cure for your A/C will trash the entire system in short order. I had it happen to me a few years ago, and several others I know have had it happen too. As someone has mentioned, it is designed for those shady car lots who get cars with non-functional A/C in. When you test drive, you notice that the A/C doesn't work,and they tell you that it must just need a charge. Their mechanic fills it full of leak-stop and charges it. You are happy for a week or 2. The compressor then packs it in. The place you bought it then tells you to deal with the 3rd party warranty company, which may or may not cover it. In any case, the lot purchased a car cheap with bad A/C, and sold it to you at top dollar, and they don't have to pay for the repairs.
PLEASE, PLEASE, don't let that crap anywhere near your car, for the sake of your own pocketbook and that of the next poor mechanic who unsuspectingly works on it with his expensive vacuum equipment.