Quote Originally Posted by Duck on Wheels View Post
But eventually, after many rounds sweat and laundering, the lanolin is used up. There are lanolin renewer products. I just checked our laundry room for the name of the one we use, but we're out. We get it from a friend who raises sheep and produces his own yarn. I think he imports it from Germany.
I've seen instructions online about melting some pure lanolin (commonly found in the maternity section for use as nipple balm) in hot water and dipping garments into it to re-lanolize them. However, these instructions were for cloth diaper covers with the intent of making them somewhat impermeable. I imagine the same tactic could be used, just with much less lanolin than they recommend.

Also, I imagine that some sort of lanolin-based superfatted soap would do the trick. The presence of some soap would help emulsify the mix, but an excess of lanolin (i.e. more lanolin than the soap can remove) would be spread throughout the garment fibers.