Adding a maximum 5% of retarder to your paint will delay the drying time - giving you more time to work with the paint, with little effect on the viscosity and opacity.
Amsterdam
Royal Talens - Amsterdam is a line of high-quality acrylic paints designed for artists of all skill levels. The line includes a range of colors with excellent lightfastness and permanence, providing artists with a wide selection of vibrant and durable paints. Royal Talens - Amsterdam acrylic paints have a buttery consistency and can be used on various surfaces such as canvas, paper, and more. These paints are a popular choice among artists for their versatility, easy mixing, and ability to create a range of techniques and effects. The line is also known for its affordability and accessibility, making it a great choice for artists of all levels.