Is there oil in his cheeks and jawbone too?

Looking back at the photos of Derek when he was younger, he's always had a tendency towards full cheeks (kind of like a chipmunk). That feature has become more pronounced as he's matured. I suspect with his recent weight loss, his cheeks are sagging a bit. If you study recent photos, you will see this is most prevalent when his head is looking down at the camera which brings gravity into the mix.
To avoid this look, he could lay on his back on the floor, thus allowing gravity to pull those cheeks back when taking photographs....or get a facelift. Surely, this is the least of his concerns right now.