Treatment totally depends on the depth of scar not size. Various modalities include creams,peels or laser resurfacing.
Best Regards
Dr. Ritupurna Dash MD
Dermatologist & Aesthetic Surgeon
DASHDermatology
Next Steps
New scars heal better than old so please show a dermatologist soon. To begin with you can apply creams containing kojic acid/arbutin/liquorice/silicone.