Super easy to use! They smoothly glide across your skin without irritating or leaving marks/bruises. You can put a little massage oil on your skin first and it makes even easier (although it is not necessary). I have only been using soul cups for a few days and can already see a difference. I just know that over the next few weeks, I am going to see a huge decrease in my cellulite. Also, I have noticed that these silcone cups are great for muscle aches. Due to the fact, the cups increase blood flood when applying and using. They relieve my muscle aches which means I do not have to resort to medication to treat my symptoms.