I've been using this product since May and I'm a combo acne-prone skin person. So this serum does the job at controlling the acne but not all the time, its better than not using it. Also I'm not sure about about helping with the redness on my face cause I still see them lol and I have new and old acne scars, it did kind of fade some of the acne scars, its just takes time. Also I'm not sure about seeing results on 30 days, cause for me it took me a while to see results. After so many times of using it, I don't know why or how the dropper head (the part where you have to squeeze it) came off from the lid. I live in a hot and humid, tropical climate, country, so careful when using too much product around your face cause it can get really oily. Also since now I'm trying to focus on my brightening my acne scars, I use this product one or twice a week.