I used Laneige Blackhead Melting Gel recently also work. You have to apply the gel after washing your face. You will feel the warming effect after you apply the gel in your forehead and nose. Then, rub your blackhead with its 特別設計的Rollable Silicon Melting-Massager矽膠刷頭, the gel will melt the "dirt" . Then, I'll rub a while with my finger tip on my nose. Wash with warm water. I used 2-3 times a week.
It can help to control the blackhead not to get bigger.
It also comes with 鼻貼 but I didn't use 鼻貼 as I think it's too dry.