"...Rosacea and periole dermatitis should probably
not be treated with SH therapy. Patients with skin
disorders should carefully avoid any androgen-effective
oral contraceptives, even for birth control purposes, and
pay particular attention to the progesterone content,
since some progesterones have androgenic aftereffects
(testosterone anabolica, nortestosterone derivatives)..."

source >

http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?
cmd=Retrieve&db=pubmed&dopt=Abstract&list_uids=12308225&query_hl=3