In the Heart and Soul baby quilt I made, there are alot of vibrant colours. The new Mom didn"t want to chance washing it and asked me if I would. I washed it with Zero for colours (liquid detergent) and used 3 Colour Catchers in the wash load...and then held my breathe...I never prewash my fabrics and one of these days I'm going to wish I had. Anyway, the Colour Catchers are awesome and reasonably priced.