These paints seem to handle reasonably well, but I can see how the chemicals other manufacturers put into their acrylic paints make them work extremely well, better than these. But of course the downside are the toxins and fumes involved with them. My acupuncturist who is extremely good at testing products for toxicity found these to be ok for me to use, unlike other brands of regular acrylics he has tested for me.
The issue I have with these is mostly the labeling. First, these are not professionally labeled, there is no information on the tube about the pigments used. No lightfastness info either. This information and more should be on the tube, not just on the website. Some of the paints are poorly named. For example, Emerald Green is not an Emerald Green, it's a Chromium Oxide Green. The tube should state this, it will give a clearer picture of what you are buying and working with.
Other issues:
Royal Blue is misnamed and in poor usage, it should be Pthalocyanine Blue which follows the PB15:3 used in the paint. Then I'd know it's a green-blue. Royal Blue could be almost anything.
Same with Magenta, I want to see "Quinacridone Magenta PR122" so I can better understand what it is. Ultramarine Blue has the correct name and is correctly produced as a standard violet-blue, but needs PB29 mentioned on the tube. "Scarlet Red" doesn't tell me much, it should be PR254 Pyrrole Red, then I can get an understanding that it's probably an orange-ish red. PBK11 is Mars Black, not Black Ochre. Ochre implies (to me) that it has a yellowish tint to it. "Brilliant Yellow" --what is that? Please use trade names instead of pretty yet vague labeling. And on and on. But this is maybe a young company? So hopefully time will lend a more solid product with clearer labeling, and a more complete selection of the range of acrylic colors and mediums available on the market.
Lastly, clicking on a color dot on a computer monitor is not a very good way to select a color. I want to see a color swatch with the correct paint name plus pertinent technical information all together.
Still, despite my criticism I'm grateful there is now a decent alternative to toxic acrylic paints. I hope time and experiential usage data will show these to be stable and we will find that we don't really need all those toxic additives to create a quality professional artists paint.
