How to Make Foaming Hand Soap: 6 Steps (with Pictures ...
Pour tap water into your empty hand soap bottle until it is one third of the way full and then add the gel soap refill until another third of the space is filled. Shake well to mix the gel and the water until they form a liquid. Tighten the pump back onto the hand soap bottle. Add the water first. If you don't, the water will make the soap foam up.
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