If u have acne and oily skin, please don't use any oils or oil-based moisturizer use water-based formula's instead.
The act of massaging Vitamin E oil helps distribute melanin which helps lighten/fade scars (not to be used if u have flared acne)
Tea tree oil will help active acne and not scars. Chemical, glycolic/AHA peels and sessions of microderm may lighten marks.
Retin A and HQ (4% with inbuilt-sunscreen) will help too. Use u're sunblock 20mins prior to stepping-out