some people have had good results with applying yohimburn to the desired areas, however from my experience, going on a keto diet greatly helps... the diminished water retention is very noticable in the face initially.
Bro, I have this same problem, and it sucks b/c underneath the facial flab, I have a chiseled face that chicks dig. I always lose these cuts when I gain weight... fat &/or muscle.
I'm willing to bet bottom dollar that you're bf% is kinda high. Furthermore, I'd venture to say that if you lose fat and get down to single digit bf%s, your face will lean up too. Do it. It'll be worth it. IMHO you prolly don't need the big guns (ie. yohimburn) just yet
this is one area (the face) where yohimburn use seems to be of noticeable benefit regardless of bodyfat (patly because there is so little actual fat there).. a little fat on the face goes a LONG way to making you look fat.