Remove and scrape putty again.
If the wall skin only partially falls off, we can remove the problematic parts, then smooth the edges, scrape a layer of putty, apply primer and brush it well, which may have some color difference with the original wall surface.
♀? Reinforce base course
If you don't want to scrape putty, you need to strengthen the base. Dismantle the original wall surface to the base surface, and brush the solid primer or interface agent again. And the wall should be polished three times before brushing, so the quality of the base will be much better.
Brush coating
If you don't like these two methods, then you can choose to paint the wall to cover the wall and solve the problem of peeling. Soak the peeling wall with water and shovel it off with a shovel. If there is no pulverization and peeling, the original putty layer is of better quality. You can completely use fine sandpaper to polish, brush primer and paint surface, which will save a lot of trouble.
Wall stickers
If you think the above methods are more troublesome, try using wall stickers. This method is more suitable for friends who are wet at home, because even if the home is wet and has just been painted with new paint, the wall skin here will fall off because of the passage of time. You can try this method of wall sticking. Although there are many kinds of wall stickers, they can effectively protect the wall, prevent moisture and repair the phenomenon of wall peeling.