"Tip-n-dip" aka "Gel-Resine" aka "Resine et Poudre" should NOT be confused what many call 'gel powder'.
Tip-n-dip is when resin is applied, then acrylic powder sprinkled over it (OR the finger is dipped), then more resin, then an activator.
The NSS frequently sells 'gel' services, for an additional 10$, and then when queried by the consumer about the powder, call it 'gel powder' or 'powder gel' WHEN they are only applying regular Acrylic with 'gel' written on the container.
Then there is Acrygel and Le Chat.
These are systems that mix the two together.
UV Gel is applied, then Acrylic powder sprinkled over it.
This discription of applying Acrygel is incorrect, with Acrygel, you scoop the gel onto your brush and then dip it into the powder, the powder is not sprinkled over the gel, so it is not messy at all, and is applied in the same way as a normal gel.
I personally do not see the sense in doing one of the above systems because it defeats the purpose of having two different systems with their own strengths and it's MESSY.
(L&P strength being found in it's 'hardness' and gel strength found in it's flexibility. By mixing, their strengths are cancelled out, in my opinion and it's left somewhere in between)
hth's