Prior to application, OW Alcohol Colours must be mixed with an alcohol-based varnish before application, as they do not form a film on their own. 

The drying time depends on the drying properties of the varnish used. 

For retouching, apply one or several drops to the palette and mix the colours directly with a brush until the desired colour is achieved.

Each colour or colour mix can be directly blended on the palette with varnish for small touch-up operations. They can also be used to colour alcohol-based varnishes by directly adding the desired amount.

The high tinting strength of the colours should be considered. 

Allow it to dry at room temperature until it is dry and non-tacky.

It is not recommended to expose the instrument directly to sunlight or UV light, as the tones and intensity of the colours may be affected.