How often do you exfoliate?

I haven't really thought deeply about exfoliation care, but
Should dead skin cells also be managed differently in winter and summer?
Summer is starting now, so I find myself thinking about how to exfoliate effectively during the summer months. There are so many different types of exfoliants, you know. I just use a peeling scrub about once a week. My skin really feels like it improves when I use that followed by a face mask. How often do you all exfoliate? I have combination skin, so I'm not sure if once a week is the right frequency. Like people who wash their hair twice a day, do those with oily skin exfoliate twice a week? Or should I exfoliate at least twice a week? I really don't know what the right exfoliation schedule is for my skin. I feel like exfoliating too often might not be good either...