I have been using it for around a week and I am absolutely IN LOVE with it. Some background: I am 25, and have never had any issues with acne bar the occasional stress breakouts (will return to this point in a bit). I have, however, always struggled with dry skin in the cold winter months, especially around my nose and lips. I recently started a more strict skin care regime, in hopes that (along with long term wrinkle prevention) I would finally be able to treat my poor dehydrated face. I started using toner, essence and eye cream, and sunscreen/bb cream daily, in addition to my normal daily moisturizer. Before Time Revoluation, I had tried THREE different types of essence which, although successfully moisturized my skin, left me breaking out TERRIBLY. I will not name the other said essences (I will say that none of them are Missha, and they were all different brands), because they all did get wonderful praising reviews from other people. I think that my skin simply wasn't compatible with whatever they use.NOW ONTO THIS WONDERFUL SAVIOR OF SKIN. I cannot even begin to describe how much I love this product. Not only is my skin super hydrated, but everything about my skin is better. It glows more, it feels healthier, everything about it I LOVE. I used to have to put moisturizer on my face (or at least the dry spots on my face) MULTIPLE times a day in the winter, and now my skin feels so soft and hydrated ALL DAY LONG.[SIDE NOTE: I would like to add that when I used the other essences, after the breakouts I would stop using them immediately, but I would still have the zits for days. I had waited around 3 days after using the third (and final) failed essence before starting Time Rev, and I still had the zits in full break out mode. I used TR for the first time the night I got it (again, 3 days after previous essence, and still breaking out), and like some kind of heavenly miracle potion, the next morning when I woke up most of the zits where gone. If I said all the zits were gone, I'd be lying, but that's also not even the intent of this stuff (but in case you're wondering, my face was back to being 100% clear of acne within ~2 days).]SUMMARY: BEST ESSENCE. 12/10 STARSEnd of ridiculously long review. Less