supposed to promote a more youthful appearance [SEP] this rose quartz roller with derma roller is a great value for this facial kit it s giftable and is believed that the microneedling treatment and pink jade roller is supposed to stimulate collagen i ve only used both for a few days so i can t say effective this product will be but i m willing to give it a try the jade roller is great to use when applying your favorite face serum it glides and rolls smoothly the microneedling treatment is not too painful when you simply apply a little bit of pressure it did not cause bleeding because i used it gently as directed you do need to be sure to only use it on clean skin and wash it after each use i am hoping to see more vibrant skin after using these tools for a few weeks