Liquitex Acrylics: Answers to the Questions We Actually Get From Schools and Shops

I work in quality control at Liquitex. Every year I review 200+ unique batches of paint, medium, and sets before they get shipped to classrooms, shops, and studios. This article covers the questions I hear most often from B2B customers—plus one or two I wish more people would ask.

• What should I buy?
• Are metallic paints actually worth it?
• Can you use ordinary copy paper?
• What does a p value calculator have to do with paint?
• How do you get rid of permanent marker?
• Are Liquitex paints non-toxic?
• What should retailers know before stocking Liquitex?

What Should I Buy: Liquitex Heavy Body Acrylic Pro Starter Set or Individual Tubes?

If you're setting up a classroom, start with the Liquitex Heavy Body Acrylic Pro Starter Set. It gives you a range of core colors in a heavy body formula, and the tubes are sized for sharing. I assumed the word 'starter' meant something basic. Didn't verify until I looked at the pigment load in our lab reports. These are professional-grade paints with less filler than many student-level alternatives. For a class of 20 to 30 students, one set is a solid starting point. For an individual artist, individual tubes might make more sense because you control the palette.

Why does this matter? Because buying a set with colors you won't use is still cheaper than replacing six dried-out tubes. It also gives students a consistent palette for color-mixing exercises, which saves grading headaches later.

Are Liquitex Metallic Acrylic Paint Worth the Extra Cost?

I have mixed feelings about metallic paints. On one hand, they're beautiful for craft projects and accent work. On the other, they won't behave like regular heavy body paints. The metallic pigment particles are larger, so coverage can be uneven, and you need to stir them longer. Liquitex Metallic Acrylic Paint works well when you understand that.

Real talk: if a retail customer expects one-coat coverage on a dark canvas, they'll be disappointed. But for mixed-media work, the effect is worth it. We ran a blind test with educators: same subject, one version in a standard color, one in a metallic. Around 87% chose the metallic version as more eye-catching. If you're stocking a school product list, metallic paints are a good add-on—not a replacement for the basics.

Can I Use Regular Copy Paper With Acrylic Paint?

You can, but let's be honest about the limits. Standard copy paper (20 lb) absorbs water from acrylic paint and buckles quickly, especially with heavy body. It's fine for swatches, color mixing practice, and quick studies. For anything you want to keep, move to 90 lb paper or a primed panel. The surprise wasn't that copy paper failed—it was how many beginners blame the paint when the issue is the surface.

If you're teaching a lesson on color theory, copy paper is a no-brainer: cheap, disposable, and enough for a single session. Just don't call it archival. For a slightly better option, try 32 lb copy paper. It's still copier paper, but it holds up much better to light washes. We didn't have a formal surface-guidelines document until after several customer questions about buckled paintings. Now every starter order in our commercial catalog includes a small note on copy paper vs. art paper.

What Does a p Value Calculator Have to Do With Paint Quality?

More than you'd think. When I'm comparing two batches of the same color—say, a new supplier's red oxide vs. our standard—I run the opacity and tint strength data through a p value calculator. That tells us whether the differences are real or just random variation. Once, I watched a buyer look at two swatches and reject one because it looked different, only to learn that the p-value was 0.42, meaning the difference could easily happen by chance.

The question isn't 'are the swatches identical?' It's 'is the difference meaningful?' A p value calculator won't make you a paint expert, but it stops your gut from making decisions that should be based on data. We also use it for supplier audits. Last year, one vendor's defect rate looked lower on paper, but their sample size was too small to matter. Once we ran the numbers, the difference was negligible.

How Do You Get Rid of Permanent Marker on a Palette or Painting?

First, test on an inconspicuous area. For a plastic palette, 91% isopropyl alcohol usually works: use a cotton swab, let it sit for 20 seconds, then wipe. For glass, the same trick works. If the marker is on a dried acrylic painting, be careful—alcohol can soften the paint film. Actually, it can reactivate areas if you scrub hard. The safer method is to use a dry erase marker over the permanent marker, then wipe both away. Weirdly, this works on non-porous surfaces.

How to get rid of permanent marker on fabric? That's harder. You can dab with alcohol, but it may spread the stain. Test first, and avoid acetone on synthetic fabrics. I made that mistake once on a sample bag. It didn't ruin a $22,000 project—that was a different quality issue. But the bag didn't survive.

Are Liquitex Paints Non-Toxic and Safe for Kids?

I want to say 'yes, all Liquitex colors are certified non-toxic,' but I might be overstating it. Here's the nuance: many colors carry the AP Seal (Approved Product) from ACMI, which means they're certified safe for art materials. Some colors, especially certain professional pigments, may not carry that certification. Don't assume a cadmium-free formula equals food-safe or skin-safe. FTC advertising guidelines (ftc.gov) have clear expectations about substantiating claims, so we check labels before we approve them—and honestly, you should check the package too.

For classrooms, look for the AP Seal and choose student-grade products if you have young children. Professional-grade paint is not a toy. In Q1 2024, we received a delivery where the label on one pigment omitted the AP Seal. It was a label application error, not a chemistry change, but we rejected the entire batch. Labels matter in this business.

What Should Retail Buyers and School Purchasers Know Before Stocking Liquitex?

Selling acrylic paint isn't just about shelf space. Heavy body paints have a thicker viscosity, and customers often confuse them with soft body or fluid acrylics. Clear signage matters. Stocking the Liquitex Heavy Body Acrylic Pro Starter Set near brushes makes sense because it's the entry product. Liquitex Metallic Acrylic Paint should be displayed near media or specialty supplies, not with the basics.

If you're a school buyer, don't just order the cheapest kit. Calculate cost per student per project. That's where the starter set wins. Also ask about storage: acrylic paint doesn't like freezing. If a pallet sits outside in winter before delivery, no amount of quality inspection can fix the damage. We had a 50,000-unit order once where the distribution center didn't follow our storage guidelines—or rather, they didn't have any. Now our contracts include specific temperature conditions.

The last thing I'll say is this: if a vendor ever tells you they can do everything, ask for proof. We'd rather recommend a better option for something we don't specialize in than watch you struggle with the wrong product. That's not a weakness. It's how trust works.