for these kinds of aliexpress toys. you should probably at the very least wear a condom while using, as they can contain non-bodysafe materials and cause issues. such as TPE like this one seems to be made of, even if some dropshippers and such claim it to be some sort of silicone.
also supposedly rips and breaks pretty fast and easy, so should probably buy it with the expectations of a short lifespan.
there is a long list of recommendations on baddragons reddit with more info on materials and links to many trusted stores.
tldr, safe enough to use with a condom.