Wool is wonderful for diaper covers and longies, and it is easy to lanolize a wool diaper cover. Lanolizing is simply adding lanolin to a wool soaker or diaper cover to make it mroe water-resistant. Lanolin is the natural substance found on wool before it is processed. Once purified, lanolin can be used to moisturize wool as well as skin. Not only is wool itself an amazing, breathable fabric for diaper covers, lanolin has some amazing properties of it's own.
Lanolin is very similar to the oils produced by our own skin, which is why it is found in so many moisturizing creams and lotions. When lanolin comes into contact with urine, it neutralizes the ammonia. This keeps your wool diaper covers smelling fresh and clean for many uses. You'll only need to wash the covers when they stop smelling fresh, start leaking, feel stiff, or become soiled.
In about 15 minutes or so you can lanolize a wool diaper cover or even do several at once. Then let them dry.
Start with a clean wool cover. Most need to be handwashed, so simply handwash them gently in a sink with a lanolin-rich wool soap. You can also use a small amount of baby shampoo if you prefer, but it won't give the extra lanolin that helps keep your covers in top shape. Rinse gently, in the same temperature water you used for washing the covers. Sudden temperature changes and agitation can felt or shrink the wool fibers. Press out any excess water and set the covers aside while you ready the lanolin.
If you are using a spray lanolin, just spritz it on liberally. You want to use enough to soak into the wool, wafting a little lanolin around won't work. Gently pat and massage it in a little and allow your wool diaper cover to dry naturally on a flat surface.
If you are using liquid or solid lanolin, add a little hot water to a clean sink or bowl. Add about 1 teaspoon lanolin per cover and a few drops of baby shampoo. Swirl it around until it mixes into the water. The water will now appear milky. You can also dissolve the lanolin in a cup of hot water and then pour it into the sink or basin.
Add just enough warm water to cover the soakers or longies.
Submerge the wool diaper cover in the sink and allow it to soak for 15 minutes or so. The longer the better. Gently drain out the water. Squeeze out the excess water and wrap the cover in a towel to remove as much moisture as possible.
Finally, allow your cover to air dry. Simply place it on a flat surface, shape it a little if needed, then let it dry for a few hours.
Enjoy your freshly lanolized wool diaper cover, soaker or longies.