1, arm shape features are different: butterfly arms are mostly seen in obese people, will be two arms flat, from the armpit to the elbow joints between the loose fat sagging, fan-shaped; unicorn arm refers to the arm is not slim enough, the muscles are thick and sturdy, due to the two arm muscle movement is not equal to the two arm shape is often asymmetrical.

2, the formation of different reasons: butterfly arm is because of the arm localized fat accumulation caused by too much; unicorn arm is because of the frequent use of arm muscles, resulting in overdeveloped arm muscles and the formation of.

3, the appearance of the arm to change the different methods: butterfly arms need to use lipolysis or liposuction surgery and other methods, the arm of the excess fat dissolved or extracted, so as to achieve the effect of thin arms; unicorn arm need to use diet control or injection of botulinum toxin and other methods to reduce arm muscles, so as to achieve the effect of arm thinning.