“Use a normal warm or cool machine wash cycle with regular powder or liquid detergent. Separate light and darks as usual. Don’t use softeners or bleach.”
[0] https://www.icebreaker.com/en-us/caring-for-your-icebreaker....
I own Icebreaker garments btw, here's what Miele says:
Biological detergents contain certain enzymes that are there to remove proteins from a garment. This is how they are effective at cleaning things such as egg from clothing. However, silk and wool are also made up of proteins. Biological detergent cannot differentiate between a bit of egg stain and a bit of silk so the enzymes will eat away at it.
This results in very small, randomly placed, holes on a garment. They won’t appear after the first wash, but tend to appear after several washes once the enzyme has gradually eaten the fabric away.
In your previous post you stated that "regular detergent" destroys wool. This post from Miele seems to be about specific "biological detergents."
Personally I wash my wool with soap like they did back in the day, no worries.