Stuff the shoes tightly with shoe trees, rolled socks, or paper
Use a warm iron on low heat with a damp cloth over the creased area
Apply gentle steam to the creases and smooth them by hand
Use a hair dryer on low heat while flexing the shoe lightly
Massage leather conditioner into leather shoes to soften the material
Wear the shoes with thick socks for short periods to help reshape them
Place the shoes under light pressure with shoe trees while they cool
For sneaker creases, use a sneaker shield or crease protector
For stubborn creases, repeat the heat and stuffing process carefully
Avoid high heat to prevent damage to the material