Because while they say there is no recovery time needed, I've heard it can leave you badly bruised with some people. If I had it done I wouldn't want anyone to look at any bruises
Everyone is different with bruising and swelling. Even with the same cosmetic procedure, some girls recover at varying rates.
About cool-sculpting, of course its advertised as painless and minimal bruising. But some people will get adverse reactions to it. It's hard to guess which of the category you belong in until you try.
But always wise to have enough savings for 1 month off work (in case of complications or pain).I had the lip filler done( looked like Frankenstein's wife for a few months.) I returned to work the next day with heavy lip bruising. Even if the clients noticed, they did not care, nor did it affect business.