Hello and welcome to HCM Since you are 21 one yrs old and have acne, do remember that this can occur on and off for a few years more due to hormonal changes, increased oil secretion. As for home remedies, be careful as they may affect your sensitive skin, and though they help pimples sometimes, they can result in burning and scarring. Also do not pick or squeeze pimples as you will cause scars. Let them heal by themselves. All scars and pigmentation take time to fade as the new skin develops. Older scars will take more time. I advise you to follow the treatment as given by your doctor, regularly as they will prevent new pimples as well as clear your scars slowly. Continue the spot peels if you are not allergic/sensitive to it. Always use a gel/water based sunscreen whenever you go out during the day to prevent more darkening. You can also use a facewash such as Glogeous once a day or on alternate days if its too dry. Do remember that new acne can leave new scars but stick to the treatment regularly and you will see good results over the next couple of months as you are already noticing improvement. Hope this helps.