If you want a permanent result, I personally suggest chin surgery. Implant can keep the shape more longer than filler or fat injection but it is still a foreign material that has to be removed one time.
I had my vline in Opera and the surgeon left me some angle as I requested. I'm happy with the result and how he listened to me. Leaving angle is actually possible as long as the doctor pays attention to your concern. Do a lot of research and tell them strictly about what you want. Good luck!
chin implant
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