Cheek Discoloration After Face Lift

Without seeing your face, I can't really comment specifically, but several possibilities exist. Most bruising resolves by two weeks, so 45 days of it would be unlikely to be bruising.
In some patients who experience excessive bruising or who develop a hematoma (blood collection), a condition called hemosiderin staining can occur, which can look similar to a bruise but lasts much longer. Hemosiderin staining has no good solution other than the passage of time and can take a year or longer to resolve.
A third cause of prolonged discoloration is a condition known as post-inflammatory hyperpigmentation (PIH), which is the result of melanin deposition (like a tan). PIH can often be reduced with the use of 4% hydroquinone cream or with Tri-Luma cream (both are by prescription only).
Hope this helps,
--DCP

After surgical rejuvenation of the face, discoloration may occur due to small hematomas under the skin. Once the hematoma resolves the discoloration typically improves. Some patients may experience prolonged discoloration due to staining of the skin. Over time these usually improve. New experience with a gently laser 1064 nm yag (Cutera's laser genesis ) has been helpful to improve small areas of discoloration. Be careful with lasers over a fresh facelift.

Discoloration after a facelift is highly unusual 45 days after the procedure.  Possible causes would include:


an unresolved bruise

visible deep permanent suture

area of hyperpigmentation (can be seen with sametime LASER and Peels)