I am 28 years old. I have been suffering with acne issues for more than 5 years. The problem is my acne is leaving a dark spot behind and it's stubborn. I started to aziderm 10% gel but I am getting some mild side effects like itching and stinging. My skin is also combination and sensitive. Kindly suggest me with a product to clear my dark spots and also the pimples and whiteheads.