I can understand why you’re looking for a solution that doesn’t involve surgery or filler. When the changes are most noticeable when you smile, it can be especially frustrating because your face may look completely different at rest. The first thing I would point out is that there probably isn’t one single issue causing everything you’re describing. A wider or uneven jaw, cheek fullness, disappearing lips, and changes in the lines around the mouth can involve several different muscles and soft-tissue structures. Could Botox help? Potentially, yes—but I would not automatically recommend more masseter Botox based on these symptoms alone. Masseter Botox works by temporarily reducing the size and activity of the masseter muscle, so it can make a broad or square lower face appear slimmer. It can also help when asymmetry is genuinely caused by one masseter being more prominent than the other. However, the masseter is close to muscles involved in smiling. If Botox spreads beyond the intended muscle or is placed too high, it can occasionally cause smile asymmetry, reduced smile width, or an unnatural smile. That is particularly relevant in your case because you're already noticing that your smile looks uneven and that your lips seem to disappear when you smile. What about the puffy cheeks and eyes? I would be careful about trying to treat cheek fullness with Botox. Botox isn't really a treatment for facial fat or generalized cheek puffiness. If the fullness you're seeing is related to muscle movement, Botox may help in a very targeted situation, but if it's related to your natural fat distribution, anatomy, or the way your cheek moves when you smile, reducing muscle activity may not give you the result you're hoping for. And sometimes, making the lower face smaller isn't necessarily the same thing as making the face more feminine or balanced. Over-reducing the masseter can potentially make the cheeks or lower face appear less supported and, in some people, can create a more hollow or aged appearance. I would focus on the smile mechanics first Before injecting anything, I would want to watch your face at rest, with a gentle smile, and with a full smile. The important questions are: Is one masseter actually larger than the other? Does one side of the mouth pull differently? Are the cheek muscles contributing to the asymmetry? Is the lower lip being pulled down more strongly on one side? Is the chin contributing to the uneven appearance? Are the lines you're seeing caused by muscle contraction or by the underlying shape of your face? Botulinum toxin can be used very selectively to address certain forms of facial asymmetry, but the key is identifying which muscle is actually responsible before weakening it. And I wouldn't rush into filler It's completely reasonable that you're hesitant about filler. You don't necessarily need filler simply because your lips look thinner or disappear somewhat when you smile. At 28, I would generally favor preserving your natural facial movement and making the smallest possible adjustment rather than trying to completely reshape your face. If Botox is appropriate, a conservative and highly targeted approach may be more appropriate than repeating the same masseter treatment you had previously. And because your concern is specifically your smile, I would be particularly cautious about treating the muscles around the mouth without first understanding exactly what's creating the asymmetry. Ultimately, the goal shouldn't be to make your face as narrow or as "feminine" as possible. It should be to preserve your natural expression while improving the balance of your features. A beautiful smile is one that still looks like you when you laugh and move—not one that has been overly frozen or sculpted.