I've been suffering from acne for about 2 years now. At first I only had a few pimples and a bit of hyperpigmentation on my left cheek, but around March last year, I started breaking out excessively on my right cheek, followed by my forehead and on my left cheek. I went to a dermatologist to help me with my skin problems, but it didn't work, so I stopped visiting her.

Now, during the day, I use the Cosrx Gentle Morning Cleanser, followed by the Cosrx AHA/BHA Toner, followed by the Corsx Centalla Blemish Ampule (which I ran out of), followed by The Ordinary Niacinamide 10% + Zinc 1%, followed by THE ORDINARY Azelaic Acid Suspension 10%, then [APIEU] MADECASSOSIDE CREAM as my moisturiser, and finally a sunscreen.

During the night, I use the same cleanser, followed by the Cosrx AHA/BHA Toner, followed by the Corsx Centalla Blemish Ampule (which I ran out of), followed by the Klairs Freshly Juiced Vitamin C Drop, followed by THE ORDINARY Azelaic Acid Suspension 10%, then [APIEU] MADECASSOSIDE CREAM as my moisturiser, and I either finish it off my mixing the moisturiser with 2 drops of Tamanu Oil or I apply a Laneige Night Cream. 

I also made the mistake of using the Laneige Night Cream during the day, as I didn't think it would really matter, but as a result, I had gotten much more whiteheads because of that. 

The reason why I am using this routine is because I wanted to reduce the hyperpigmentation and scarring on my skin, but it doesn't seem to be very effective, so I am hoping you guys would have some recommendations of products or tips I should do to get rid of the whiteheads, hyperpigmentation and the acne.

P.S. My skin is on the oily side and I am 18 years old. I also use Pixi Beauty Glow Peel Pads Advanced Exfoliating Treatment every few days to exfoliate.