Towels that once were bright and fluffy may turn dull and dingy with use. A helpful article in hunker.com offers a few easy steps to restore the joys of a clean white towel and lengthen the life of your linens. Try adding 1/2 cup of washing soda (or 1 cup of baking soda) to a towels-only wash load. Don’t overcrowd –three or four large towels per load gives room to agitate, rinse and spin. Presoak in hot water with your usual detergent – but only the recommended amount. Avoid chlorine bleach – it weakens fibers. Use an oxygen bleach to whiten. Avoid fabric softeners of any kind, they coat the fibers with a waxy residue that prevents them from absorbing water. And line dry in the sunshine to naturally whiten and add an unmatchable fresh scent.
From:: White towels for summer