I know this liquid wallpaper. My parents used it in their apartment. it looks great. The room became more spacious and lighter.

It would be cheaper to repaint the walls. When I was renovating my house, I used liquid wallpaper Silk Plaster. It's easy to apply on the old paint. All you need is priming the surface in 2 coats and then applying paint to give whiteness. In some cases it's recommended to process the walls with gypsum mixtures firstly, but I didn't do that. It did't affect the result.

I want to refresh my living room. Now the walls are painted lettuce, but I'm tired of it. What is better to wallpaper or repaint?