Derivan Challenge is the smart choice for parents, available in handy 500ml bottles and economical 2L eco Pak dispencing paint is a breeze and no waste.

Derivan Acrylic is formulated to be used by higher education students and artists as a full-bodied acrylic colour. Derivan Acrylic can also be used in conjunction with various media to produce silkscreens, watercolour techniques, airbrushing and painting on fabric

 With Derivan Challenge, all colours may be intermixed to form bright secondary and tertiary colours. It's a fun and educational way for children to learn about colour theory while painting.​

 Wash all utensils, brushes and hands with water and soap to clean. 

Are you worried about the mess after a children's painting session? With Derivan Challenge, clean-up is easy. Wash all utensils, brushes, and hands with soap and water.

 Light resistance is the ability of the paint to retain its colour (or not fade) over time due to prolonged exposure to light that can cause a chemical change in the pigment. Ultraviolet light, which is one of the most destructive wavelengths, can very quickly damage pigments that are not resistant to light. 

Permanence is the intrinsic chemical stability of pigments against chemical or environmental factors such as light, heat, water, acids, moulds, etc. 

The light resistance of the paint is evaluated or measured according to several different standards, but the most popular ones are: 

ASTM (ASTM International): ASTM 4303(*) is a procedure or standard for the evaluation of artists' pigments. Ratings range from ASTM I to ASTM V, with pigments rated ASTM I considered to have excellent light fastness qualities (pigments will remain unchanged for more than 100 years) and those rated ASTM III-V considered impermanent or fugitive (not considered for artistic use). 

BWS (Blue Wool Scale): The Blue Wool Scale was developed to compare the light fastness of dyes for fabric processing. The scale ranges from BWS 8 (excellent light fastness) to BWS 1 (fugitive). 

For a painting to be considered artistic quality, it must be light stable or permanent, with an ASTM I or ASTM II rating and/or a BWS rating of 8-7 or BWS 6. 

Derivan acrylic pigments are all classified ASTM I or ASTM II, which means they are permanent. 

(*)ASTM4303 - Standard test methods for the light fastness of dyes used in artists' materials. It describes the accepted industry standards for performing light resistance tests with sunlight, fluorescent lamps, a xenon arc fadeometer, cold white fluorescent lamps or fluorescent UV lamps.