Acne scarring – Post Inflammatory Hyperpigmentation.

Patient: HiAs a result of picking pimples on my arms I have many purple-red large acne scars (0.5-2cm) along the lower part of my arm. (The area got infected)I have been using Meladerm for the last two weeks, but there has been no change.Also, my parents cannot afford for me to have laser at the moment and I believe hydroquinone is banned where I live. I am also using vitamin e oil- Is there anything else I can do?How long do they generally take to fade naturally?Thanks,