I've recently decided to try a couple of Olay's Regenerist products (the serum and night cream) due to a recent positive write-up about the line in Allure magazine. Well, maybe it wasn't that recent ago. Anyway, I know that you can't layer a BHA/AHA product with a retinoid because the BHA/AHA inactivates the retinoid, so I'm wondering if I should have any concerns with adding in Regenerist to my BHA (AM) and retinoid (PM) routine. Anyone know?