Hydrochromic Paint - 50ml

Product Code : SCL-CLE-12870

Quick Answer: The Hydrochromic Paint - 50ml is a reversible hydrochromic pigment that forms an opaque film which turns transparent when exposed to water, revealing a coloured image or pattern underneath.

Last updated: October 2026

Key Features

• Reversible hydrochromic pigment
• Forms an opaque film over a coloured image or pattern
• Film becomes transparent when exposed to water
• Returns to its opaque state as it dries
• Size: 50ml

About This Product

Hydrochromic pigments change colour when exposed to water. This paint works by forming an opaque film: when wet, the film becomes transparent and reveals what is hidden beneath, so it appears to change colour, and as it dries it turns opaque again and covers the image.

Frequently Asked Questions

How does the hydrochromic paint change colour?

It forms an opaque film over a coloured image or pattern. When the film is exposed to water it becomes transparent and reveals what is underneath, so the paint appears to change colour.

Is the colour change reversible?

Yes. As the film dries it returns to its opaque state and covers the image or pattern again.

Related: Chemistry Lab Equipment, Photochromic Pigment: Magenta - 3g, Mixed Smart Materials Collection.

For a quotation on the Hydrochromic Paint - 50ml, contact School Lab China.