Hi
Hyperpigmentation following the pimples are quite common. It will fade off with time. If it tends to to be severe KOjivit can help to an extent. There are more options even with creams or we can go for peels to get better outcome.
Next Steps
Consult a Cosmetic Surgeon / Dermatologist
Health Tips
Avoid home remedies / Sunexposure / Picking of acnes.