Will waterproofing products work on old jacket that has been washed many times in Aerial/Daz/etc?

Tedious Bore

I'm just reading up on products like NikWax (https://greatoutdoors.ie/shop/nikwax-300ml-tech-wash-and-tx-direct-twin-pack) which suggest to wash your rain jacket occasionally using one product, and then use another product to re-proof when it eventually loses its waterproofness.

So I'm just wondering will an old jacket that has been regularly thrown in the washwith the rest of my clothes -usually at 30degrees- still be fit for re-proofing? or does that process only really work well so long as you've been caring for the jacket using the special washing stuff over the years

I don't mind buying pricey specialised products for good jackets in future, just not sure whether to bother for an old one if the proofing might not work so well

spaceHopper

Its worth a shot, decathlon do a spray can that is cheap one of the yachting mags did a test and the cheapest option won out, a spray by gill, I'd say the decathlon one is the same

https://www.decathlon.co.uk/search?Ntt=spray&facets=natureLabel:Waterproofer_

https://www.pbo.co.uk/gear/reproof-your-leaky-oilskins-7-reproofers-tested-180

Tedious Bore

Ok thanks for the tip