My personal favourite and I know other brands are out there – but I’ve always used it and never had any problems and only a good experience, so I used Nikwax Tech Wash. It’s so simple to use – put your washing machine onto a rinse cycle (you need to clear any excess detergent from your machine) then add your jackets, trousers or what other waterproof gear you need to wash and follow the instructions on the label, pretty simple really.
If possible try and hang your jacket out to dry rather than putting it on heat – heat can affect the material especially if its gortex.
The jacket once dry is now nice and clean, however its stripped off the waterproof layer in the cleaning process.
But if you have a down filled jacket, please use Nikwax Down Wash cleaning products.