There's two theories on this and the 1st one particular would be that the towels may be destroyed because of the chlorine bleach and turned yellow. One more detergent You need to use can be borax detergent booster as it is actually all-natural and safer to employ than chlorine bleach. https://andresllmha.59bloggers.com/36313972/a-simple-key-for-bleached-cotton-unveiled