Gather 1/2 cup white shaving cream, 1 tablespoon liquid starch (or contact lens solution), and 1/4 cup baking soda
In a bowl, add the shaving cream
Add the baking soda and mix until combined
Slowly add the liquid starch while stirring
Knead the slime in the bowl until it stops sticking to your hands
If too sticky, add a little more liquid starch and knead
If too stiff, add a small amount of shaving cream and knead
Let it sit 5–10 minutes, then knead again
Store in an airtight container