I saw that post about not using acrylic paint on your skin a while back and remember thinking ‘well that can’t be right…’ because we’ve used acrylics in place of face paint for ages.
I’ve realized that the OP and the person saying ‘NO THIS IS UNSAFE’ were talking about two separate kinds of acrylics.
You do not want to use ARTISTS acrylics on your skin. However the kind that come in these sorts of bottles and are explicitly labeled ‘Non-Toxic’ are perfectly fine!
Hope that cleared some things up, and make sure to read labels before you put anything on your body!