GOLDEN Extra Heavy Gel Semi-Gloss acrylic medium — 473 ml jar, high-viscosity impasto texture

GOLDEN Extra Heavy Gel Semi-Gloss is a very thick acrylic gel medium designed to build sculptural texture, hold sharp peaks, and increase paint body while drying to a translucent semi-gloss finish.

This 16 oz jar from GOLDEN gives artists a high-viscosity medium that blends with acrylic colour to add volume and structural support for impasto techniques. Thicker than GOLDEN's Heavy Body acrylics and formulated to perform alongside the brand's High Solid Gels, this Extra Heavy Gel keeps brushstrokes and palette-knife marks intact as it cures. Because it dries translucent, it preserves underlying colour relationships when used as a textural layer or mixed directly into paint.

How does Extra Heavy Gel Semi-Gloss change paint handling and texture?

Mixing this gel with acrylic colour increases viscosity without significantly altering pigment adhesion, so brush and knife strokes maintain elevated peaks and three-dimensional texture. It’s ideal when you want the paint to stand proud of the surface or to sculpt raised effects that remain defined after drying.

• Increases body for stronger impasto and visible knife marks
• Maintains shape to hold peaks and ridges
• Mixes easily with heavy-body paints for controlled thickness
• Dries translucent to retain underlying tonal relationships

What finish and archival behavior can I expect?

The product cures to a semi-gloss sheen that subtly reflects light without becoming highly reflective. Being a GOLDEN medium, it’s formulated for permanence within typical acrylic standards; use as directed and allow full cure time before varnishing or varnish testing.

• Semi-gloss surface that enhances texture highlights
• Translucent drying preserves colour depth beneath gel layers
• Compatible with conventional acrylic varnishes once fully cured

How should I apply and blend the Extra Heavy Gel?

Apply straight from the jar with a palette knife for sculptural effects, or blend into paint on the palette to thicken colour. Thin edges can be feathered with a wet brush or medium; thicker applications benefit from extended drying times and avoidance of sudden temperature changes to prevent drying irregularities.

• Use palette knife or stiff brush for pronounced texture
• Blend into paint up to desired body—test ratios for peak retention
• Allow longer drying for thick passages; work in well-ventilated area

What practical tips help get the best results with this 16 oz jar?

Keep the lid tightly closed between uses to retain consistency and prevent skinning. For smooth final surfaces, thin with appropriate GOLDEN mediums; for sculpted effects, apply in layers and let each layer firm up before adding more mass. Clean tools promptly with water while wet.

• Store sealed to maintain viscosity and prevent drying in the jar
• Layer rather than overloading a single passage to reduce long dry times
• Clean brushes and knives with water before gel cures
• Test small mixes to find preferred gel-to-paint ratio

Who is this for: GOLDEN Extra Heavy Gel Semi-Gloss 16 oz is aimed at painters and mixed-media artists who need a sturdy, high-viscosity medium to build sculptural surfaces, accentuate impasto work, or thicken acrylic colour for expressive texture. It suits studio artists working on stretched canvas, panels, or board who want durable raised effects and semi-gloss translucency without compromising colour depth.