Slow-dri Gel Additive
This gel slows drying time by 40%
Slow drying time by 40%, without affecting color opacity, so you can work it for longer.
Acrylic paints & mediums
All acrylic-friendly surfaces
Large area painting where you need to keep your media workable for longer
Blending & softening edges
Lightfast & archival
Flexible & non-cracking
Water-resistant when dry
Intermixable with all Liquitex materials
- Extends the open time of your gel color/medium by 40% so it is blendable and workable for longer
- Maintains the same level of transparency
- Thickens and increases viscosity
- Retains brush/knife marks
- Ideal for dry and hot climates
- Fully intermixable with all Liquitex products
- Start by adding up to 25% of Slow-dri to your color/medium with a knife
- Mix in slowly and thoroughly, 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
- 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 additives
Other artists have asked us...
I live in Florida and I find my acrylics dry too quickly. Can I add anything to stop it?
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.
My acrylic paint dries too fast. What can I do?
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.
Why do you have four different Slow-dri mediums? It’s a bit confusing. What’s the difference between them?
We have two Liquitex Slow-dri additives and two mediums. There are some three key differences: the gel and fluid mediums contain acrylic resins so you can add as much as you like to your color; the additives however do not contain resins and need to be handled with care - you can only add a small amount before you start to weaken the paint's structure. The consistency is another difference - the gel medium and additive are perfect for thicker body paints like Heavy Body, and will thicken thinner paints. The fluid medium and additive are better for Soft Body and other more fluid paints, or for thinning. The final main difference is that the Slow-dri additives will NOT effect transparency levels of your color, while the mediums will.