These lovely wool wash bars are handmade for me by Tuft Woolens.
They are all-natural, pH balanced, and full of lanolin which acts as a softener to condition your wool garment. There are no artificial surfactants or detergents, only soft and natural oils and extracts.
My signature Little Skein scent is what I wash all of my yarn in, and from time to time, I have extras of other wool wash bars created for my subscription box.
Essential oils & extracts
Other Ingredients: Saponified oils of-Coconut, Palm, Castor and Olive.
Here's Martha's tutorial on how to use a wool wash bar.