Clip the nail tip short.
Use a hand file to file off the top coat from the nail tip for the underneath layers to better soak in with the acetone.
Soak a cotton ball in the acetone remover and place it on top of the nail.
Fix the cotton ball to the nail using aluminum foils or any other nail wrap.
Wait for 15-20 minutes for the nail to soak up the acetone thoroughly.
Remove the acetone wrap. Make sure to remove the wrap one at a time, which means DO NOT remove it for the next nail until the last nail is finished with the next step. Otherwise, the acetone will become dry and hardened, making the previous soaking process be meaningless and the following step be impossible.
Push off the soften gel gently with a cuticle pusher. If you have removed the acetone wraps all at a time from the last step, it would be difficult to push off the gel and your natural nails may hurt during the process.
Trim the nail to a desired shape, use a nail buffer to polish the surface, clean the nail plate and apply cuticle oil to the cuticle area.