The first winter: sand, not salt
If a slab goes down anywhere near winter, or simply has not made it through its first cold season yet, keep de-icing salt off it entirely and reach for sand for grip. Down in flatter, milder country this would be a smaller worry than it is up here. Up at our elevation a winter runs the slab through that freeze and thaw swing over and over, with no help needed from anything you spread on it. Salt speeds that cycle up right on the surface that needs the most time, not the least.
This applies to the whole slab, not just the spots that look wet or icy. It is easy to salt only the entry point and figure the rest of the driveway is fine, but the same young surface runs the full length of the pour, and every square foot of it is dealing with the same curing timeline.
Why timing is the whole issue, not the salt itself
Concrete keeps gaining strength for weeks after it stops looking wet, and it is at its most porous during that stretch. Salt draws moisture through a porous surface faster than the freeze and thaw cycle manages on its own, and water moving in and out fast is what stresses a slab that has not caught up yet. Give the concrete that first winter to finish curing and it is dealing with an ordinary freeze and thaw cycle instead of one salt is actively working on.
Air entrainment, the tiny air pockets built into the mix, gives freezing water somewhere to expand into instead of pushing the surface apart. That protection is part of a properly specified mix from day one, but it works alongside time, not instead of it. A young slab still benefits from being left alone through that first stretch of cold.
After the first winter
Once a slab has made it through one full winter, it has caught up on the strength and hardness that made it sensitive in the first place, and occasional salt use stops being a real concern. That does not mean unlimited salt is doing an older driveway any favors either. Heavy, repeated use over years is harder on any slab than light, occasional use, new or old.
A stamped or decorative surface is worth treating a little more carefully even after that first winter, simply because the texture and detail show wear sooner than a plain broom finish does. It is a matter of degree, not a different rule.
What to do if salt already went down by mistake
Sweep or shovel off what you can and rinse the area once temperatures allow, rather than leaving it sitting on the surface to keep working. One mistaken application on a new slab is not usually something to panic over. What we would want to know about is scaling, a flaking or peeling look on the surface that shows up after repeated salt exposure on young concrete, since that is a sign the salt did real damage rather than just sitting there.
A single accidental pass with a bag meant for the sidewalk is a different situation than a whole season of regular use on a slab that was not ready for it. If you are not sure which one you are looking at, call and describe what the surface looks like now.