Dryer sheets can decrease the absorbency of all those thirsty towels you bought.
Even fabric softener can have an adverse affect those thirsty terry fibres.
Reclaim them to their former glory!
First a run in the wash cycle on HOT and add ¼ cup vinegar to the cycle. Run a second cycle after the first adding detergent and ½ cup baking soda. Ta-da restoration is complete.
After this, the gentle cycle is fine and dry on low to medium heat minus the dryer sheets.
Love those big thick and thirsty beach towels!