Hi in order to improve your skin you need to use retinoids
on your face at night daily like isotrex gel
that will reduce your sebum/oil production pores and black heads acne and scars will reduce.
to improve your complexion use sun block during day time.you can use kojic acid
,azelic acid and glycolic acid
like glyco aid or skinoren cream.you can also use glutathione
inj or capsules to improve your complexion.