The teachings of Islam focus on developing inner beauty and not prioritizing your external physical appearance. Permanent physical changes, such as cosmetic improvements and interventions, are not allowed because they are considered to alter and change Allah's creation. A potential problem for Muslim men and women considering lip filler treatment is the haram of dermal fillers. Some people argue that Islam focuses on the growth of inner beauty, while outer beauty should not be the top priority and that a moral limit should be imposed when it comes to changing physical appearance away from “God's creation”.
I'm sorry what you're saying. And everyone must perform their own ijtihad and come to their own conclusions about what is haram or halal. I think trends like having big lips come and go. Each person is different with their own unique characteristics and it's important to remember that even though you don't have the exact characteristics that are currently “ideal”, you're still beautiful.
However, the topic is often complex for Islamic patients because lip fillers are temporary and, therefore, the line is often blurred between what is a permanent change in one's body and what is a short-term change in one's appearance.