Question: how to make slime not sticky without borax or contact solution?
Answer: Sprinkle on about 1/2 tsp (2g) of baking soda. Sprinkle the baking soda over your slime and then use your hands to knead it in. Keep kneading until the slime no longer feels sticky. If it still feels sticky after adding baking soda, add 1/8 tsp (0.5 g) more and knead again.