Ski product question

[Cordlet]

So after my 6 months on accutane, I still got small pimples and red bumps time to time so my derm gave me this cream (it’s like a white jelly consistency). The bottle just says “Clindamycin and Benzoyl Peroxide gel. 1%5%”. Can anyone explain what this is doing exactly cuz it works but it drys tf out of my face overnight.