Special Purpose Mediums – Golden


*August Fire Sale Deal

Less 20%
GAC 100 – Now R308 / Was R385
GAC 500 – Now R308 / Was R385
GAC 900 – Now R319.19 / Was R399
[ Do you want to shop this deal in-store? Email us at to confirm in-store stock availability at your nearest Artsavingsclub branch]


GAC (short for Golden Artist Colors) Specialty Acrylic Polymers are based on 100% acrylic polymer emulsions. The GACs are useful as mediums or modifiers of acrylic paints. GACs can be used to extend acrylic colours, regulate transparency, create glazes, increase gloss, reduce viscosity or improve adhesion and film integrity. GAC polymers can also be used for binding pigment solids for various effects and surfaces. Unlike the other GOLDEN Mediums and Gels, GAC Acrylic Polymers have only a minimum amount of thickeners, levellers, defoamers and surfactants to ensure good film formation.

The consistency of the GAC polymers is more fluid and thin than other GOLDEN Mediums, so they will reduce the thickness of most GOLDEN Acrylic Paints. GOLDEN Fluid Acrylics are slightly thicker than the GACs but will exhibit less change in viscosity with the addition of a GAC polymer.

Each GAC is a specialised polymer with unique benefits and applications. Refer to the product descriptions below to find the proper medium for particular applications.


GAC 100 is a thin, translucent, gloss medium. Useful for thinning or extending colours as well as increasing flexibility. Transforms solids more readily than other polymers and is useful for creating homemade paints. (Item# 3910)

GAC 500 Gloss extender for Fluid Acrylic Colors is a unique balance of film hardness and flexibility offering increased levelling, increased mar resistance and decreased dry film tack. GAC 500 is particularly useful for extending Fluid Acrylic Colors with minimal property change. It can be mixed with Airbrush Transparent Extender for a fast-drying, sprayable isolation coat. (Item# 3950)

GAC 900 heat-set fabric painting medium – 100% acrylic medium modifies paints for a softer hand and increased launderability on wearable fabrics. MUST be heat-set. (Item# 3990)


View our comprehensive range of Golden products

Available Options:


GAC 100 (3910), GAC 500 (3950), GAC 900 (3990)

Bottle Size


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