don't you read the news about botched jobs at the salons?
the big big warning there is that salons are NOT qualified to do
these things...
and they are NOT supposed to do these things.. they know but if
the bloody salon wants to, and you idiotically go do it even when
you know, you kena infection or worse, kena disfigured, it's your
own fault..
and worse, the insurance companies will never pay you if you are
insured
some ppl always likes to gamble with cheap stuff...
Same things for tattoo and such... Wan cheap, Wan fresh... wait
the orh kee also become big big then they know... 
Things for life better to do proper ones... Certified and
qualified ones... Think of it as investment for the long run...