thanks for posting your query.
doxycycline is effective in treating acne
also hope you have not been picking up on any of the lesions as that will lead to deep scars
in addition to doxycycline, active lesions also need to be treated with creams for better results.
first of all creams that you can apply.
you need to follow a routine of cleansing, sunscreen , creams daily.
cleanse your face with cetaphil
cleansing lotion for acne prone skin thrice daily.
sunscreen needs to be used daily , neutrogena would be a good choice.
creams would be:-
gel on the active acne lesions in the morning and Retin A
0.025% cream at night on the entire face.
Retin A needs to be applied only at night, start with coming it for 2 hours and then gradually increase the time interval to keep it overnight.