Thank you for your question. It is quite difficult for me to provide you with an accurate response with the little information you provide. There are many causes of adult acne and usualy it requires an in-depth history taking and clinical exam to ellicit the possible causes. Usually it has something to do with the balance of various forms of oestrogens within the body. I can recommend something like Saw Palmetto for example which is know to be of assistance in some cases but if it works, or does not, we will not know why without proper investigation.
You are welcome to try the Saw Palmetto - Solgar make a great product - but if you would like to discuss this further please contact me via www.healthnation.co.za to make an appointment.
Many thanks and warm regards