Acne scars occur due to damage to your skin due to inflammatory acne. Picking or fiddling with acne and not taking timely treatment increases the chances of scar formation. Scar is formed when normal skin is damaged and replaced by abnormal fibrous tissue. No home remedy or creams or oral medicines can treat scars. Treatments or procedures aimed at stimulating new skin formation underneath scar can only improve scars. 50-80% improvement can be expected with combination of various treatment options like chemicL peels, Scar surgeries, fractional Laser or Microneedle Radiofrequency treatments. Visit a qualified dermatologist near you for detail discussion as treatment of scars is individualised. Hope this helps