Your friend seems to be having adult acne. This acne is due to underlying hormonal or lifestyle problems. This may not respond to only cream and you may need oral antibiotics as well as retinoids. Please pay attention to your diet and include plenty of fruits and vegetables. Exercise regularly and avoid junk food.
Use a salicylic acid face wash twice a day. Avoid picking at your pimples to minimise the risk of scarring.
Please contact a dermatologist who can examine you and prescribe the appropriate skin care products and treatments. Treatments such as chemical peels laser or dermabrasion will also help you find significant improvement in the scars.
However it is important to follow up with the recommended medicines and treatments so that best results can be found