Hi there i have checked youtube videos and in the US there seems to be a couple of coating sprays that do a very good job and last alot of washes for sublimating on cotton, or even better results when people have used it on cotton/poly blend t-shirts
Is there anything like this in the UK?, the brands i have seen in the US are not sold here and shipping is over £40 from etsy lol
i did a google search and ebay search but could only find some that had all bad reviews of not working at all :/