hi and welcome to HCM.
is common in your age. excess sebum on your face is an indication that your hormones ae active.
Do limit the intake of sugary foods, and spices.
Control sebum by the use of ketoconazole
soaps, and ketoconazole shampoo twice a week.
is one of the factors to increase sebum production. Do check if your cycles are regular.
you may use topical powders of antifungal preparation.
do take care