Last month I shared a video over on TikTok of my process dyeing some polyester fabric. I wanted to make some warm and breathable pajamas using this off-white fleece back knit from The Fabric Fairy. I thought it would be fun to dye the fabric.
I had only previously dyed natural fibers using a traditional liquid or powder RIT dye. This summer I happened upon the RIT Dye More synthetic dyes in my local big box store. I thought, “Wouldn’t it be fun to ice dye the fleece back knit?!”
When the fabric arrived, I did some more research and realized that ice dyeing is only possible with natural fibers (bummer!) because polyester must be heated in order to take on new colors.
Dyeing Polyester Fabric with RIT Dye More
I decided to instead dye the fleece back knit a solid color. If you know me, you know I LOVE to mix RIT dyes for custom colors that can’t be found in stores. I had some pink RIT Dye More liquid dye and some blue iPoly powder dye. I was aiming for a pink with a hint of purple. I was pretty sure the manufacturers didn’t want me to mix the colors. But it was 9pm and this is what I had, so I decided to wing it.
I mostly followed the manufacturer instructions for the RIT dye, preparing the bath and adding the pink dye. When I added a touch of the blue powder to the dye bath, it turned decidedly purple.
I swished the fabric around for about 30 minutes, stopping to pet our new cat outside and chatting with my husband. This resulted in a less than perfectly even dye job in a few spots. I also found that the iPoly blue dye did not mix perfectly with the RIT dye and deposited what looked like some pen ink in a couple of spots. I knew I was taking a risk when I added two different dyes together, so I wasn’t upset. It’s just for a pair of pajamas, after all.
Thank goodness these imperfect areas were easy to cut around. I paired this with a marled grey athletic knit and made my umpteenth pair of Movie Night Pajamas from Sew a Little Seam for my daughter. (Free pattern if you join the FB group!) The color is decidedly blueberry. Much different than the pinky purple I imagined, but I still love it.
Dyeing fabric is a really fun way to get some unique colors you’ve always dreamed of! And if you’re adventurous, you could mix two, or even three colors together. I’m going to stick to RIT dyes in the future, because they have worked so well with me. Make sure you read the labels when you visit the store and know the fiber content of your fabric. You’ll either need regular RIT dye for cotton, wool, rayon, etc. or RIT Dye More for synthetics.
Check out my post on dyeing RAYON from last summer here.
Hope you had a great day, and thanks for reading!