I made a patch test but didn't think of washing it... hoping my mistake will help others. I lost about 20 hours work of intricate detail on a coat. The colour bled when it came in contact with dewy grass. The paint then transferred and made a massive mess with anything that came into contact with it. It's worth mentioning that ironing made no difference for sealing the paint. Absolutely no longevity at all. Do not recommend... especially on synthetic fabrics. Might be better suited for natural fabrics.