(Older packaging some of you may be familiar with......)
(....newest packaging but the same great product!)
The reason being is it's not only a cleaning shampoo but also a conditioning one. It's perfect for cottons, washable silks and rayons. I recommend testing a scrap in wash if you're unsure of the results. I have to admit the conditioner acts as a fabric softener as well. Not much is needed since it's concentrated and depends on your load size. A medium load usually calls for 1-2 cap fulls. So I recommend you give it a try- you won't be disappointed. And of course my disclaimer is please test any fabrics aside from the one's I listed. Enjoy this tip and look out for more in the future!!!!