It can take roughly 2 to 3 weeks for the beneficial effects of oil cleansing to kick in. It’s also worth noting that your skin may get worse before it gets better. That’s because there’s sometimes a detoxifying effect that accompanies oil cleansing. As your skin adjusts to the cleansing oil, you may notice redness, irritation, and acne that wasn’t there before. But trust me, give it several weeks to balance out, and you’ll be thankful you did!