DRIERS

The vegetable oils used in paint dry naturally… however, it is sometimes necessary to increase drying qualities and to harmonise hardening type, that is the role of driers. Driers must be used in moderation, and the recommended doses must be respected. Products fully mixable with oil, combining a minimum of coloration with regular, deep drying.

White Drier

Clear drier.

Colorless drier containing calcium salts (which activate the natural drying characteristics of the pigments). No effect on hue or the quality of the brushstroke. Non-yellowing. Up to 15% may be added.

Courtrai drier

In brief, the Courtrai drier makes the oil «hyperventilate» to demand more oxygen and accelerate the hardening of the layers of paint.

Contains calcium and zirconium salts. Greater drying power than White drier. Dries the oil in-depth. Reduces the difference that naturally exists between the normal drying nature of most colours and the slow drying tendency of certain other colours. May be mixed directly with the oil colour (2% maximum) or thinner, adding several drops
(5 maximum) per 5 ml. Excess drier adversely affects the final quality of the paint film.

Cobalt Drier

This drier is so effective that an excess dose can cause the opposite effect. Therefore use sparingly (0.5% approx.). May slightly tint the color.

Contains cobalt, zirconium, zinc and calcium salts. Highly concentrated: use in small doses, i.e. a few drops for a knob of color (less than 0.5%). Any excess may cause difficulties during drying. Provides well-balanced drying of the oil color, both on the surface and in depth. No effect on hue or gloss.