The Unseen releases holographic, heat-activated hair dye

Known as Colour Alchemy, the dye has a formula is that it allows it to react directly to temperature and use different wavelengths of light to emphasize the color. Each color is described by the brand as “holographic” because microprisms in the formula shrink and expand to produce the different shades.

British brand The Unseen is pushing hair technology forward with a heat-reactive dye that changes color in a matter of minutes.