The dark spot is likely post-inflammatory hyperpigmentation (PIH), a common outcome after picking acne lesions, especially in Indian skin types.
Next Steps
To lighten it safely, you can try a cream with azelaic acid 10–20% or kojic acid + niacinamide combination—these help reduce pigmentation gradually.
Health Tips
Avoid touching or picking at pimples to prevent further marks. Use sunscreen daily to prevent the spot from darkening. For faster and more targeted results, an online consultation with a dermatologist can help tailor the right treatment.