When and how are acrylic french nail tips reapplied?

I have french nail tips done about a month and half ago and they are now growing out past the end of my finger tips. Do they have to remove the old acrylics first or can they just put the new tips on? Any help would be grateful and appreciated.When and how are acrylic french nail tips reapplied?
Yon need to keep your nails maintained on a regular basis. For most people, that means getting fills every 2 to 3 weeks. NOT after a month and a half. Why bother having nails if you aren't going to take care of them. Whatever - thats your problem, not mine. I don't quite understand what you mean when you say ';can they just put the new tips on?'; What do you mean, remove the plastic tip and replace it? If so, that isn't how it's done. I mean, somebody who has no clue how to do nails might try that, but if they have any skill whatsoever they will do what is called a backfill, or better known as a rebalance. This is a normal fill plus the acrylic on your free edge is filed down most of the way - including some of the pink in order to place white acrylic on your nails and create a new smile line on your nail in the original position which should be right at the point where your free edge begins. They do this because, as you mentioned, the white is now grown out, along with the rest of the nail, and it needs to be essentially set back into it's proper position on the nail. I hope I'm explaining this OK. If the tech is not doing what I just described, and ios either replacing the entire tip, or is removing all your nails and starting over, then your tech lacks the skills necessary to do this properly. Its not a simple thing to do a backfill. It takes some skill to do it, and do it right. If your tech cannot do one, then I suggest leaving that salon and finding someone with the necessary skills. And you may want to have sculpted nails put on the next time since they are so much better than the use of plastic tips. Anyone can use tips. It takes a real tech with skill to sculpt a nice set of nails, and it looks way better too.