Tulip One-Step Tie-Dye Refills keep your look fresh and bold in the most convenient and eco-friendly way to continue the fabric dyeing experience! Whether you love to dye everything in site or you've got a group activity on the horizon, count on One-Step Dye Refills to make the experience easy and convenient! These refill packets feature a variety of pastel hues ideal for use on 100% cotton, rayon and silk fabrics.Details:Includes assorted pastel colors0.46 oz. (13 g) total net wt.6 packetsFor use with Tulip 4 fl. oz. (118 mL) dye bottlesEach packet makes 4 fl. oz. (118 mL) dyeMost vibrant on 100% cotton, rayon and silk fabricsSodium bicarbonate and reactive dyeConforms to ASTM D-4236