The blackhead remover tool has 3 colors lights. The Red light is Soft Care Mode which can soften skin and restore skin's elasticity. Green Light is Brightening Care Mode which can brighten skin. Blu-ray is Tightening Care Mode which can inhibit the skin from secreting,tightening pores,damaging Shortly press the "Cold Hot Switch"(M button),the Blackhead remover enters into the hot and the cold compress mode. The Hot mode will help open the pores and the Cold mode can get the skin cold and help to shrink pores. 12 mild suction level is for sensitive and dry skin and first time use with the small hole beauty head 3 middle suction level is for neutral skin 4 high suction level is for oily skin and 5 strong suction level is for mixed skin with big hole head. This blackhead remover is extremely lightweight and portable enabling you to easily take it with you to spas, beauty palors or for use at home. Built-in USB rechargeable lithium battery lasts 120min on a full charge. Our products and services will not let you down, thank you for your support to our store. I wish you and your loved ones good health.? Our products and services will not let you down, thank you for your support to our store. I wish you and your loved ones good health. ? This blackhead remover is extremely lightweight and portable enabling you to easily take it with you to spas, beauty palors or for use at home. Built-in USB rechargeable lithium battery lasts 120min on a full charge. ? 12 mild suction level is for sensitive and dry skin and first time use with the small hole beauty head 3 middle suction level is for neutral skin 4 high suction level is for oily skin and 5 strong suction level is for mixed skin with big hole head. ? Shortly press the "Cold Hot Switch"(M button),the Blackhead remover enters into the hot and the cold compress mode. The Hot mode will help open the pores and the Cold mode can get the skin cold and help to shrink pores. ? The blackhead remover tool has 3 colors lights. The Red light is Soft Care Mode which can soften skin and restore skin's elasticity. Green Light is Brightening Care Mode which can brighten skin. Blu-ray is Tightening Care Mode which can inhibit the skin from secreting,tightening pores,damaging.