This is a dry cleaners tips for clean, bright white, fluffy towels: Regular / Frequent Washes - Add boosters which supercharge your detergent, powdered oxygen bleach to help with whitening, a rinse product like vinegar or Downy rinse, these help remove leftover residue and minerals which can take away from the natural softness of the towel. By washing your white towels and sheets often you’ll remove body oil before it can oxidize and turn yellow. Deep Cleans - This can be done a few times a year