Flow Aid Additive | Acrylic Medium – Liquitex


SKU: 094376924176 Categories: , , Tag:

Liquitex Flow Aid Additive will dramatically increase the flow of your colour or mediums while minimizing brushstrokes as well as improve the absorbency and blending of colours or mediums.

  • Use with: Acrylic paints & mediums.
  • Use on: All acrylic-friendly surfaces.
  • Techniques: Flow art, Watercolor techniques, Colour washing & Staining & bleeding effects.
  • Size: 4oz/118ml



  • Lightfast & archival
  • Permanent
  • Non-yellowing
  • Flexible & non-cracking
  • Water-resistant when dry
  • Intermixable with all Liquitex materials


What it does

  • Breaks water tension to improve flow and lower viscosity.
  • Gives a smooth finish with fewer brush strokes due to reduced surface friction.
  • Increases transparency and makes the colour more absorbent and blendable.


What is the difference between Flow Aid and Pouring medium?

When you use the two different products you’ll quickly see the difference. Pouring Medium keeps a structured, high gloss consistency when mixed with colour, while Flow Aid Additive will instantly thin and increase transparency. Flow Aid breaks the surface tension of the colour and gives it a water-like feel. Pouring Medium also contains acrylic resins and so you can add as much as you like to paint without weakening it, while Flow Aid is a resin-free additive and needs to be diluted before adding to colour.

In Stock

How to use it

  • Fully intermixable with all Liquitex products.
  • First, dilute your concentrated Flow Aid with water – 1 part Flow Aid to 20 parts water – distilled water will give the best results. Use 1 part Flow Aid to 10 parts water if you want a more concentrated effect.
  • Add up to 25% of diluted Flow Aid to your colour/medium and stir slowly to avoid foaming. If it does foam, leave it to sit while the foam disappears.
  • If applying to an absorbent surface, your colour/medium will sink in like a stain or dye; if using on a non-absorbent surface your colour/medium will be more fluid and take longer to dry.


How not to use it

  • Do not use Flow Aid undiluted as it results in poor acrylic adhesion, cracking, tackiness and water sensitivity.
  • As this is an additive – with no acrylic binders – do not add more than 25% to your colour/medium and do not mix with other additives. This can cause excessive shrinkage, cracking and the acrylic film to break down.
  • Do not shake or stir too vigorously as it will foam.
  • Don’t use for marbling as it breaks the surface tension of the water.
  • Do not use with any non-acrylic media.




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