When you have Low Testosterone your skin will get dry, loss of collegen will make you age faster. With any TRT please get your estrogen levels checked. As the estrogen increases so does the activity of your seobacious glands producing more sebum which causes the oiliness. (High E has many other bad side effects)
Sebasous activity is the main cause of acne. If your E2 is elevated over 80 you will probably notices simular symptoms of Low Testosterone, you may get that bacne. When you lower your E down to the sweet range around 25, you should notices less active seobasous activity, skin less oily, and bacne less.
I would not suggest the panoxyl for all over daily usage as the active is benzoyl peroxide which can cause very dry irritated and uncomfortable skin. Find a good esthetician in your area who has experience with Hormonal Acne.
For oiliness on the head/face have your esthetician prescribe you a mattifying lotion to help the discomfort.
Do not wash your skin more than morning and night. Over washing will trigger the SG to produce more oil.
Get on a good cosmeceutical skin care regiment.
Schedule a good deep cleaning back facial.
Look into getting Blue Light Therapy, this is a quick 15 minute therapy while you are starting your new skin care regiment. This will decrease the P-acne that causes those uncomfortable pustuals. (White heads)
It takes 28 days for youth skin and around 45 days for middle age skin to turn over. Give your new regiment the time needed to SEE the results.