I had lip injections when I first transitioned. It was the only cosmetic procedure my dad would let me have done. It didn't even last a full six months, more like 4 months. The Dr told me I would need to have them redone at least every six months. I will tell you it was the most painful thing I've ever experienced. The needle is huge and the filler is thick. It's like getting a very painful shot that takes forever. And it's not just one shot. The Dr did 3 shots in each lip. I nearly broke my dad's hand from squeezing it so hard. I've never had it done again and I never would. The idea of going through that every six months was an awful thought. An my lips look ok without filler. Drs charge different prices. My dad paid $800.00 for mine.