Squeaky Clean, I am not sure about the purity of Oil of Olay, but I mean that it has been a pretty good brand for me. So long as I used the most uncomplicated one, the lotion for sensitive skin. The creams etc, I find have too many other things and I react. But other people do fine and seem to swear by its effectiveness for lines etc.
In fact, I get so sensitive to skin products that oil of olay lotion ended up being the only one I bothered using. Did not seem to cause issues with that one and i felt it was a pretty good moisturiser.