Full cotton clothing tends to shrink on first wash by as much as 10 percent, so when selecting cotton, always go for a slightly larger size. (mummymummymum.com)
Check diaper manufacturer's instructions again with water temperature, as some recommend first washing on cold, then hot. (believemidwiferyservices.com)
An easy fix is to do a quick first wash with the system and then apply specialty shampoo by hand. (petbusiness.com)