I wanted to like this product so badly, since I had heard nothing but great things about it. Unfortunately, it only made my acne worse. I patch tested this 3 times, each time hoping that it would work for me but nope: it clogged my pores and gave me lots of whiteheads & closed comedones - it definitely didn't improve my skin texture. My skin looked bumpy and it felt rough. I think the niacinamide or castor oil caused my skin to break out, so be careful if your skin doesn't react well to those ingredients.
The serum didn't do anything for my hyperpigmentation. After several weeks of using this, my acne scars still looked the same and they didn't seem to fade any quicker.
However, this product worked really well on the oily parts on my skin: it gave my skin a nice matte finish and it works really well under makeup. I didn't find this serum very hydrating so people with dry skin might want to apply lots of hydrating layers after using this serum to avoid dryness.
It's such a fantastic product that really helps me clearing my acne and it works wonder with my skin texture. I still get some acnes during the time of the month, but this totally helps clearing 'em quicker compares to other acne treatment I used in the past. There's a slight stinging sensation if your pimples just popped, but it's totally normal.
Suffice to say, this one has become a staple in my skincare routine that totally deserves HG status for me.