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Children’s health is a big problem to theirselves and their parents.Washing hands is
an important part of health care to children.But there is a problem that kids usually do
not like to wash their hand.And the parents do not know if the babies’ hands have been
washed clearly?This kind of soap is white originally,once it get touch with hand,it will
become colorful.This make the hand washing funny,so the kids will be addicted to wash
their hand.What’s more,the color of the soap reflect the clean level of hands.So the
parents know when the babies’hand have been washed clean.
Jiangsu Normal University