I have been using this serum successfully for three years now on a daily basis!
31-year-old male with combination-oily skin prone to acne, which has experienced severe acne during adolescence.
The results for me (in chronological order):
1) Significantly cleared my pores.
2) Tightened my pores, which no longer look like "craters on the moon."
3) Cleared small (and large) pimples.
4) Cleared old acne scars-marks.
5) Smoothened my skin (when I wash my face, my fingers glide on the skin instead of feeling the rough texture of imperfections).
6) Exfoliation has tightened my skin and almost eliminated every fine line-wrinkle. (My forehead looks ironed.)
7) Effectively prevents acne and treats it within one to two days. (Observing myself since the age of 13, I have noticed that sugar mainly triggers my acne.)
8) Greatly reduced the redness of old acne (marks of post-inflammatory hyperpigmentation).
However, the most important thing is the journey to success and not just the product itself.
I started using it very cautiously to easily get accustomed to it with minimal "side effects" and irritations.
During the first week, I used it only once (it was the first and only time I felt a tingling sensation from the acids).
During the second week, I used it twice, and I continued increasing its usage by one day each week until I reached daily use.
Attention! I do NOT use and SHOULD NOT use anything "mechanical," such as facial scrubs.
When I wash my face (morning-evening), I pat-dry my face! I do not rub the towel on my skin. This will cause irritations and affect the skin barrier.
In the evening, I wash my face twice. The first time, I use a little soap (toleriane foaming double cleanser), which removes the initial heavy oiliness, daily dirt, and sunscreen. Then, the second cleanse is the deep and effective one, creating a rich lather.
Afterward, I apply the serum (three drops, forehead and cheeks) by patting it on my face only when my skin is COMPLETELY DRY! This reduces irritations.
(When the skin is damp, it absorbs the products more deeply, and in this case, the acids may cause problems. Also, I have noticed that patting application, as opposed to the classic spreading-rubbing, yields much better results for me.)
Sunscreen every day, rain or shine!!! I don't particularly like using it, but it is the most important of all! Besides protecting the skin when applied, it helps in the following way: since the skin doesn't have to deal with the harmful effects of radiation, it has time to focus on other things like regeneration, healing, collagen production, elastin, etc.
Also, it is important to note that it is not like we just got a product and expect miracles. We need to observe ourselves. For example, someone's skin may not like one of the ingredients in the product. Even I, if I see that my skin is irritated (I easily get red in the sun despite having a darker complexion), I will not use it for one or two nights.
I hope this helps you because it is a product that I have become very familiar with.