This paint changes colour from translucent to deep colour under UV light.

It is possible to play with the background colours, as these colours are semi-opaque, i.e. they do not completely cover the background.

For example, in the coloured state, a blue colour applied over a yellow background will give a green colour.

Photochromic paint works under the following conditions :

- To activate, it will change in strong daylight. Sunlight activates it completely and immediately. But the effect under UV light is even better as this is the optimum response light range that exists in daylight but becomes concentrated in UVA light. The photochromic effect is activated very slightly in the presence of indirect light (reflected from the walls in a room).

It is not advisable to use photochromic paint permanently outdoors, as the sun will damage it quickly and it will no longer work after a period of time. So best to use indoors.

Unlike a classic paint, whose coloured pigments are fixed and immobile, a reaction paint changes under certain conditions and then "reverts" when light is removed

Durability

Irreversible paint, as opposed to reversible paint, is activated only once. Photochromic paint, on the other hand, is what we call a reversible paint, capable of changing its colour a limited number of times. It is estimated that these paints last for a few thousand changes, beyond which they will no longer change colour.

We supply in 120ml pots in either Magenta or Blue colours.