What can I use to Degloss paint?
Keeping this in view, do I have to Degloss before painting?
If the walls are textured, then a deglosser is a better approach. A primer is not necessary if you do a good job of deglossing and you are painting over a light color. Whether you use a primer or not, be sure to degloss the existing finish. This will assure a good adhesion of the top coat.
Also asked, what can I use instead of Deglosser?
Milk paint, which you can purchase as a powder or premixed, or even whip it up yourself at home, is a nontoxic and biodegradable paint option that's great for use on wood furniture—and if you mix it with an equal part of bonding agent, you don't need to sand the piece before beginning.
The Simple Green® Ready-To-Use Surface Prep Cleaner is both non-toxic and biodegradable. This cleaner rinses clean from the surface to prepare it for painting. Available in a ready-to-use formula.