Can you bleach a polyester/cotton blend? According to Clorox, polyester and cotton blends can be regularly washed with chlorine bleach. For lightening polyester/cotton blends, they recommend using ¾ cup bleach for regular size loads. You should also wash your white clothes with hot water.
What you need You will need a 50/50 polyester/cotton blend shirt, bleach, water and a small spray bottle. Some use a 50:50 mixture of bleach and water, but undiluted bleach can also be used.
Cotton/polyester blend white fabrics can be washed continuously with Clorox® Regular Bleach2 without hesitation.
To restore dirty shirts, there are a few things you can try. White 100% polyester shirts can actually be washed with Clorox® Regular-Bleach and you can start with a soak. Add 3 tablespoons of Clorox Regular Bleach2 to 1 gallon of cold water and stir.
Bleach is generally not recommended for polyester fabrics; it doesn’t react well with the fibers to remove color and it can actually damage the fabric.
Put the polyester garment in your washing machine. Wash the polyester in warm water along with 1/2 cup white vinegar and 1/4 cup laundry detergent. Vinegar safely whitens, softens and disinfects polyester garments.
Solution-dyed fibers, including acrylic, nylon, polyethylene, and polypropylene, and high-energy polyester exhibit strong colorfastness when exposed to bleach. Polyurethane-based fabrics can also be treated with a finish that allows them to withstand both bleach and high concentrations of rubbing alcohol.