What You’ll Need?
While it's still wet, acrylic paint is water-soluble, but after it's dry, you can only remove it from canvas with a solvent. Whether you want to strip an entire canvas for reuse or correct a painting mistake, the task is tricky and doesn't guarantee perfect results. With a suitable solvent and the proper techniques, you can usually remove acrylic paint from a canvas that has been dried with success, but keep in mind that some staining is likely to remain. Also, be aware that you need to be careful when using chemical solvents to remove acrylic paint from the canvas.
If you have just painted a canvas with acrylic paint but are not satisfied with the results or want to change a part of it or correct a few mistakes, you need a suitable solvent to remove acrylic paint from your canvas.
Solvents commonly used to remove acrylic paint from a canvas include rubbing alcohol, turpentine, and mineral spirits. These are all inexpensive and readily available household products. Another option suitable for paint removal is hand sanitizer but be careful to use an aloe-free formula; otherwise, it will stain the canvas.
You can also try some artist-grade solvents that are specifically formulated for acrylic paint removal. Such solvents are readily available at an art supply store