Down pillows will "break in" with use, becoming softer with time. How much softer will depend on how clean the pillow is kept, how the pillow is used (some people use their pillow like a punching bag, others are more gentle), etc.
How do you soften down pillows?
Simply put your down pillows in the dryer with a damp washcloth, three dryer balls, and your favorite fabric softener sheet. Tumble dry on low heat for 15-20 minutes for fluffy and refreshed pillows for your bedroom.
Do feather pillows get softer?
As you can imagine, each feather has a quill, so over time, thin cushions could allow the quills to poke through. ... The feather-filled types are often combined with down to make them softer. Pure feather varieties tend to have a slimmer profile and can flatten over time as the quills line up.