Is la roche-posay K Milk really effective in removing acne? I have been offended by acne since adolescence, and I have used many products repeatedly. I still have some say in this la roche-posay K milk. Its main ingredient is salicylic acid, which can accelerate keratin metabolism, but this ingredient is irritating to the skin to some extent, which is one of the reasons why some girls burst beans after using it. Its texture is refreshing, easy to absorb, and it has a certain oil control effect. However, according to the actual measurement, it feels that K Milk has a better effect on the closed mouth, but it is not ideal for the red and swollen acne. If you have some closed mouth on your chin or forehead, I quite recommend it. Basically, it takes two days, and it will shrink if it is not too serious. I also accidentally found that it seems to have a certain effect of removing blackheads, and I feel that blackheads have improved a lot after using it. However, because its ingredients are still relatively irritating, it is not recommended that you use it every day, just two or three times a week.