Has anyone tried retinol creams/lotions/serums? If so, did it work at all? I have seen vague mention of it online. I live in a state that gets really cold in the autumn and winter, and my acne is more manageable if I put a lot of effort into it.. I may get away with only one or two blemishes. But I have cystic acne, so it's not tiny little blemishes. I spend so much time balancing face masks, washing my face, moisturizing and spot treating with benzoyl peroxide (which I only use when desperate as spot treating only two little places will make my whole face red, itchy and stings and burns for a few days). But summer months, it gets much worse and will cover my face at times. Not only is it unsightly, it's quite painful. So I am curious if retinol is something I can utilize to help.