I'm in my early 40s and starting to see minor lines attaching submental area to neck, and more pronounced horicontal neck lines "tech neck". My concern of either treatment is I am slim (110, 5'5") with fairly thin skin so worried about "fat loss" or anything that will make my neck more aged. Which treatment would you recommend, or would you recommend a different treatment? (e.g., botox, fraxel)?