I have an indentation of volume loss on only one sideh of my face on my jawline. It is an indentation and lead to a lumpier region which I'm wondering is my masseter muscle? The reason I am confused is I've not had this before, so I don't know why it would be stronger and visible over time unless it's just sagging skin around it making it obvious? I know it is hard to tell without an assessment but I was wondering if I could have some ideas? The area is not normally red like in the photos, I was just feeling and massaging the area when I took these.