Will a memory foam pillow lose its shape?

No, a memory foam pillow should not lose its shape or bounce as long as you take the proper care of it. The proper way to care for a memory foam pillow is allowing it to fully expand after each night’s use. Don’t keep the pressure on the pillow if you’re not sleeping. For example, avoid letting something like a book rest on your pillow constantly, as memory foam needs time to expand and regain its natural shape.