Thank you for your question. This is an extremely common concern. A face to face consultation would help establish the reason for your top lip disappearing. Its often related to the muscle inverting the lip. There are two potential treatments that you could consider.Lip augmentation - lip fillers are a safe, minimally invasive way to create subtle enhancements, resulting natural fullness, symmetry and well-defined lips. For your first time I would suggest a hyaluronic acid filler which is non permanent. Botox - can assist with reducing the muscle activity that can lead to the lip lifting too high and showing an excess of gums. A face to face consultation with a specialist will help form a treatment plan suited specifically for you.
Thank you for posting your question and for providing a photograph of the issue you are describing. It is important to visit a physician who has experience treating lips, like a facial plastic surgeon. They are often the best physicians to visit to address the issue you are having. They will also be able to take your personal goals into account to create a customized plan of action. Commonly a combination of botox and filler is used to deal with a gummy smile, which is what you appear to be describing. Whatever the therapy may be, your trusted plastic surgeon will be more than qualified to help you navigate questions and treatment plans.Hope this helps!Dr. Dan Landmann, MD, MSEE