Lip Augmentation with Fillers or Lip Implant or Fat -- Go Slow, Use Cannulas
Fillers can be used to augment the lower cutaneous lip/chin area. I suggest seeing an expert. Best, Dr. Emer.
I would like to know if the pocket under my lips are fat or muscle?
Thank you for sharing your question and photographs. Based on your photographs alone it appears that this pocket is your mentalis muscle which can be improved with Botox to help weaken it. See an ASPS board certified plastic surgeon in consultation for a definite diagnosis and treatment recommendation.