I purchased a $9.88 sleepwear cardigan from Walmart this afternoon after taking my mother to her appointments. My idea was to do a discharge treatment along the bottom. I gathered the bottom of the cardigan with needle and thread and stitched it to a plastic hanger. It was then hung over a wash tub of water and anti-chlor. See photo at the end of this post for the product I used, also purchased from Walmart.
I then put my dripless bleach in a squirt bottle and dripped it in a controlled manner over the water bath. When the discharge was to the color that I liked, I dumped it into the water bath to rinse out and neutralized the bleach.