Levonorgestrel
"I've had skyla just over 3 months and overall, I love it! Insertion wasn't as bad as I thought it would be. Since then, my periods have been light but long- 7-10 days long, but I only need panty liners or a light tampon. My bf and I don't need to take time to put a condom on when things are getting intense and I love it! I have developed some back acne which is annoying, but not a deal breaker. I'm hoping that goes away eventually. Overall, I would definitely recommend!"