Best Acne Treatment. What COCs have the official indication for acne tx?

• In Canada, Alesse, Tri-cyclen & Diane 35 have official indications
for acne in the product monograph.
• Yasmin is as efficacious as Tri-cyclen & Diane 35
 for mildmoderate acne, but not officially indicated.
{Yaz in the USA recently got  acne FDA indication}
• All COCs are generally beneficial, likely due to estrogens effect
on sex hormone binding globulin (SHBG) resulting in an
antiandrogenic effect.
  Limited and conflicting evidence does
not support the superiority of one progestin over another.