Is it only recently they've started improving?
I always notice that clients nails tend to last longer in summer than winter, at a guess, I think the nails don't get as dry during summer making nail coatings last longer.
But hey if it works for your clients then great! Keep doing it
I'm going to try and look into this further and update the thread when I find out more
Look forward to hearing more.
I'm not happy to sell it as working with shellac despite the improvements I've seen with a few clients I'd like evidence to back the claims up. The fact that CND haven't provided evidence that it works with shellac troubles me as it would be a money maker for them if it was true so they'd advertise the fact!