Likely cause
Digestive problem, hormonal issues or blood impurities can be the most common causes of the acne marks.
What to watch for
Observe the cause of the acne, especially when it appears if it appears after some specific meal or junk then avoid that kind of food. If your all over digestion is weak then improve your digestion by balance and healthy meal. If digestion is not the issue then it could be because of blood impurities.
What you can do
For oily skin use the face wash - anti acne face wash (nutrich)
Totally safe and Ayurvedic product.
You can use purodil gel (AIMIL)
For acne marks
When to see a doctor
If you have acne other than face like on back or any other places consult a good Physician. I would suggest consultating a good Ayurveda doctor, they will correct your digestion and will give you blood purifier so your acne will be cured and not only suppressed.
This is general information from a verified doctor and is not a diagnosis or a substitute for an in-person consultation. In an emergency, seek immediate medical care.