Thank you for your question and for sharing your photo. Lip filler can enhance lip shape, symmetry, and volume, but candidacy does depend on your natural lip anatomy, tissue support, and the balance between the top and bottom lip. In some cases, when the upper lip is naturally thinner or lacks structural support, filler may not achieve the level of enhancement you’re hoping for—or it could look disproportionate. Alternative approaches, such as a lip flip with Botox or even surgical options like a lip lift, are sometimes considered for patients seeking more definition or a larger upper lip when filler alone may not be ideal. Ultimately, it’s important to have an experienced injector evaluate your lips in person to determine the safest and most effective option for you.