From Crazy Aarons Hypercolor Foaming Soap:

Give children an extra reason to wash their hands! Created using Hypercolor technology, this color changing natural foam soap is a blast to use. Watch as it changes in your hands and then rinses clear. It smells terrific, too! Gentle and effective, this natural foam soap changes from magenta to white to let kids know when they have thoroughly scrubbed. Under $12.00

Amazon link: https://amzn.to/3bMvgOA  – As an Amazon Associate Giz Wiz Biz earns from qualifying Amazon purchases. You pay no more.