One of the best options for borax free slime is to use shampoo. One of the first results to pop up when you search for a borax-free slime recipe on the internet is one that uses shampoo, water, and cornstarch. You may want to read the ingredients on the shampoo, if you’re worried about your child putting the slime in their mouths. However, making a slime without borax will mean that the slime isn’t going to be as stretchy. Borax is the compound that makes the slime stretch in all those pictures of the amazing homemade slime.
However, borax isn’t available in some places, and if that’s the case, that’s okay. As demonstrated, there are alternatives, and a simple internet search should help you find them.