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Best Choice Rust-Oleum 
Rust-Oleum Zinsser Roll-A-Tex Medium Texture Paint Additive for Both Interior & Exterior Surfaces – Enhanced Cover-Up fo Enhanced Repair Capabilities: Specifically formulated to fill and cover moderately flawed and cracked surfaces, this medFlood 
FLOOD/PPG FLD6-04 Floetrol Additive by Flood/PPG Conditions paintLiquitex 
LIQUITEX Slow Dri-Fluid Additive Clear 118 ml (Pack of 1) Extends the open time of your colour/medium by 40 percent so it is blendable and workable for longerBest Value Sennelier 
Sennelier Non Toxic Additive Green for Oil Thinner 100ml - Eco-Friendly, Plant-Based Medium for Safer Painting - Non-Fla ECO-FRIENDLY FORMULA: Crafted from plant-based ingredients, this oil thinner offers a sustainable and safer choice for aMONT MARTE 
Mont Marte Premium Acrylic Flow Medium 8.45oz (250ml) -Mix this medium with acrylic paints to increase flow -Makes paint easier to spread across large areas -Creates smooth,U.S. Art Supply 
U.S. Art Supply Floetrol Paint Additive Pouring Medium for Acrylic Paint and 50 Mixing Sticks Liquitex 
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Global Colours Global Colours Gloss Medium & Varnish - Professional Fluid Mediums | Artist Paints (250ml) Global Colours Gloss Medium and Varnish is a concentrated glazing medium for artists. 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