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coatings that change of color when in contact with water

coatings that change of color when in contact with water

(OP)
Hi folks,

Im looking for chemical coating / (natural) dyes that can change color when in contact with water. My problem is that this coating needs to be in touch with human skin so should not have harmful effects.

Do you have any suggestions other than Hydro-chromic paints?

I recently came across this Barbie H20 Design Studio dress material (https://youtu.be/sPmFFEOTE9M). Does anyone know what material they are using?

Any other suggestions?

Thanks in advance.

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