hi..thanks for your query.
contains both benzoyl peroxide
and erythromycin; these are anti-acne medications and in many people, skin gets drier on repeated use.Do you still have pimples? If not, you can stop this completely. You can use Clindamycin
gel occassioanaly if you have few eruptions.
For a regular care of the dry skin
you have, you can use Cetaphil
cleanser for dry/sensitive skin. After washing face, you should apply a non comedogenic ,oil free moisturizer ,which are available with many pharmaceutical companies OTC in most countries.U might need to repeat applications of the moisturizer according to the nature of your skin.Finally, a sunscreen should be applied 20 mins before sun exposure and repeated 4-5hourly.The sunscreen should be non Comedogenic as well.
hope this helps..take care!