Thanks for writing in.
Acne is a hormonal
Birth control pills can aggravate acne.
When untreated or improperly treated acne can cause pigmentation and ugly scars on face.
Acne on chin are due to hormonal imbalance.
You should apply antibiotic like clindamycin
in morning for 2 hours.
should be applied at night time.
Washing your face with Himalaya neem face wash would be helpful.
Oral drugs should be taken along with creams.
Please visit a good dermatologist
or physician for proper examination and treatment with prescription drugs for acne.
Hope this helps.