Plaster/smooth walls with Uniflott

According to the manufacturer's information, you can do that. However, I lack the experience whether it works well and easily or if it is better to choose another brand.

You can also do that with uniflott. Dries slightly yellowish. Ardex is white. Then apply primer and then paint.

Putty is exactly what you are looking for. Provided you don’t have cm-deep grooves or defects. Whether you prefer manufacturer A or B…

What I find a bit lacking is the indication of what you want to fill on. Paint, plaster, wallpaper?? Saying in general that filler material X works is difficult. If you fill on paint, it can quickly lead to blistering or complete detachment. But you only see that once you start. Sometimes in old buildings you find glue paints under the wall paints. I also like to work with Ardex, but it’s not that different. More important is whether the filler holds. With paints, you also have to differentiate more. A dispersion silicate paint can be painted diluted with the fixative and does not need to be primed separately. (But that is not stated like this in the technical data sheet, that is my own experience). But that also depends again on the substrates you currently have. With many other paints, you should not just do it like that.