Your concerns are related to a few contributing factors. With weight loss, results are typically great everywhere except in the face, where fat actually is valuable to maintain a youthful appearance. Also, in general, with aging, we loss volume in the face, including the lips. Restoring volume to the lips can be done with dermal filler. Choice of filler is up to your treating provider, but in general we like to choose a softer, more malleable filler that can move with your lips for natural results. In terms of the vertical lines around your lips, these can also be treated with a soft filler, but care needs to be taken not to add too much volume here or it can create a "monkey" look. For these resting lines (not only around your mouth but also the chin), I would recommend microneedling and/or platelet-rich plasma (PRP) injections to helps stimulate collagen and elastin production, which helps "heal" the skin and improve resting lines and wrinkles. Finally, a professional level skin care program is a must! I remind my clients that I can do great things for them in my studio, but they can optimize their results by doing a customized skin care routine every day.
Best, Dr. Melissa