I bought some nikwax Down Wash to wash my sudden coat.
Out of interest I compared it to a bottle of Nikwax Tech Wash. They appear to contain identical ingredients :
contains among over ingredients less than 5% polycarboxylates. 5-15% soap. Non-ionic suficactants.
So given that, I already own a big bottle of tech wash, I can't see a good reason to buy down specific wash, they appear to be identical.
Am I missing anything?