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Professional Slow-Dri Fluid Additive
SKU:094376926088
Slow drying time by 40%, without affecting color opacity, so you can work your paint for longer.
Size
4oz/118ml
$13.29
Quantity
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MEDIUMS
Use with
Acrylic paints & mediums | check |
Use on
All acrylic-friendly surfaces | check |
Techniques
Large area painting where you need to keep your media workable for longer | check |
Blending & softening edges | check |
Character
Lightfast & archival | check |
Permanent | check |
Non-yellowing | check |
Flexible & non-cracking | check |
Water-resistant when dry | check |
Intermixable with all Liquitex materials | check |

All our paints are intermixable and water-based, with archival results. Tested and certified at Duke University by the ACMI.
MORE INFO
What it does
- Extends the open time of your color/medium by 40% so it is blendable and workable for longer
- Maintains the same level of transparency
- Lowers viscosity
- Ideal for dry and hot climates
How to use it
- Fully intermixable with all Liquitex products
- Start by adding up to 25% of Slow-Dri to your color/medium
- Stir slowly to mix well, and use
- If you're working over a long period of time, mix into color on the palette to keep it fresh and skin-free for longer
How not to use it
- As this is an additive – with no acrylic binders - do not add more than 25% to your color/medium and do not mix with other additives. This can cause the acrylic film to break down, leaving it sticky and prone to shrinkage
- Do not use with any non-acrylic media
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Tips & Techniques
Useful guides for using gessoes, mediums and varnishes
Slow-dri FAQs
Other artists have asked us...
-
Yes, we make four professional formulas to slow the drying rate down, which are perfect for warm climates. They each have their own benefits - take a look on their product pages. -
We suggest you first avoid adding water to your paint and minimize heat and air flow in your painting environment. Secondly. make use of acrylic mediums to extend the color, especially Slow-Dri Fluid or Gel, Airbrush Medium or Slow-Dri Fluid or Gel Additive. All of these will extend the open time and workability of your color. Remember that only one additive should be used within a color mix as combining additives can compromise the paint film stability. -
A good question. Additives are used to adjust the chemistry of acrylic paints, but they are very different to the rest of the mediums family. Most acrylic mediums contain high proportions of acrylic resins, but additives do not. With most acrylic mediums, you can add as much as you like to your color without weakening the stability of the acrylic film, while additives will dilute the strength of the acrylic film. This means that you need to be more careful about how much you mix into to your paint or it will have issues around drying, tackiness, separation and durability. Our four additives offer really useful individual benefits, so just make sure you follow the directions for use before starting to work with them.