Extender vs Retarder
Are these products the same/different? I'm wanting my paint to remain fluid longer for easier blending of background colors. Would you share your technique for using either of these products. I've read where some pour the product into their water basin; some dip their paint brush into the product then into their paint; some mix their product into their puddle of paint and some brush it directly on the project surface. Which method is better and keeps the paint wet the longest? Thanks, in advance, for your help and advice.