How Long Does it Take for Fat Trasnsfer to Face (Mainly Cheeks) to Heal? Still Red 6 Weeks Post-Op.

6 weeks ago I had some fat taken from my thigh,and put in to my cheeks and chin area.The swelling and redness, had subsided 2 weeks ago, but these last 3 days the redness has come back with a vengance, also my skin is quite dry in the areas I had treated, I have put moisturizer on, but it stings for a while soaks in,but this morning the redness is still there, i have to cover it with make up, how long should this last? begining to wish i had saved my money, and not bothered....