Tried this after being recommended in an outdoor shop.
The product was tried in a Hotpoint Aquarius at 30 degrees on a short cycle with short spin. The garment was a ten year old Berghaus Aquafoil cagoule which was soaking up rain. No beading and running off, just soaking in.
Washed as per instructions then hung out to dry on a washing line.
Once dry the cagoule felt no different but when it rained the water mostly beaded and ran off with hardly any soaking in. Not as good as a new Berghaus but impressive nonetheless. I will use the product again on this cagoule and on others in the family.
Recommended.