I know this is quite an old post but just another point on the whole NSS thing
I’m a nail tech, but I live near a salon that is run by Vietnamese techs. I wanted to go undercover and sample the other techs in my area just to see what the going rates were, what the service was like etc. to see where I’d be sitting in the pack. The Vietnamese nail bar was very basic looking - no glamorous decor - but they were meticulously clean and followed standards. The extensions and nail design I got were excellent. It was a super fast service, mainly because they spoke no English, so the clients weren’t slowing them down
I used my phone translator app to chit chat and they were trained in the UK, and love doing nails.
On the flip side, I went to a very expensive place in the city centre. They also did lashes and I overheard them saying it was fine that their client hadn’t been patch tested for a lash lift
In terms of nails, I didn’t see anything drastically terrible, but there were little niggles that just weren’t best practice. The extensions I got were fine, not perfect, and definitely not worth the inflated price.
So to confirm - not all Asian nail techs are Chinese (and in my experience, most of them aren’t haha), not all “basic” nail salons are NSS… and equally, not all fancy/nicely decorated salons are great quality.