i\'m trying to use vellejo\'s drying retarder but i don\'t know the proper mix:last time i tried i made a color that dried 30 min later...it\'s too much.what i must do to have 3-5min?please help me!
Liquitex recommends that you mix their acrylic additives 1:10 with water. If you check the Vallejo site under auxiliary they also caution not to exceed a 10% mix.
