Yellowing is a common issue for white garments that are worn and washed frequently. You should utilize a gentle oxygen-based bleach to maintain a crisp and bright finish. Submerge your hoodie in a basin of cool water mixed with oxygenated cleaning powder. Allow the garment to soak for at least one hour before the main wash. This process safely breaks down oils and sweat that cause whi... https://essentiialhoodie.com