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Thermal Polish for Dummies

February 10, 2015

These magical polishes are such fun. You could spend hours examining how the temperature in your fingers fluctuate and sometimes it can come as a surprise when your hand feels cold but your pinky is hot. Not only that but it feels like its a living breathing ombre.

The science is surprisingly complex for something as simple as nail polish, but I would like to simplyfy it.

Thermal polishes use pigments known as leuco dyes consisting of tiny little spheres called microcapsules

Inside the microcapsule there are three types of chemicals:

Dye  .  Weak Acid  .  Solvent


The dye - a coloured chemical undergoes a reversible reaction, combining with a H+ ion to become colourless

The weak acid - a colourless chemical, undergoes a reversible reaction, combining with the H+ ion to become colourful

 So there are these two components fighting over who gets the H+


The solvent - controls which situation occurs! It has a melting point around the temperature you want the colour to change. When the solvent is liquid (hot), the H+ prefers to stick to the dye (colourless dye).Polish is mixed with the leuco dyes to make a rainbow of impressive colours When the polish is warm,the H+ prefers to stick to the dye making the leuco dye colourless and you only see the regular pigment, but when the polish is cool, the colour you see is a combination of the leuco dye and the regular pigment.


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Thermal Polish Swatches

March 2, 2015

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