Safe to use hair removal cream down there?

Is it safe to use hair removal cream to get rid of hair on my vagina? I just tired of shaving and missing spot and then it not being smooth like I want to! But I was told it cause some darkening? Is that true? I dont wanna do waxing since one of my lips is sagging, just naturally and the wax lady told me it could make it more saggy so I dont wanna risk it.