Don't do it! So many who do end up looking like freaks, like Kenny Rogers, Dolly Parton, Wayne Newton, etc.
Also, putting foreign objects under your skin, as with implants, sets you up for cancer, later down the line. An old gf got breast implants and, with zero risks, except the implants, came up with 4th Stage bc. She had a double mastectomy, and reconstructive surgery. Her boss, a heart surgeon, and others in the medical profession, saw to it that she got the best treatments in the world, no exaggeration. She's fine today, as far as I know. We haven't spoken for a few years.
Let Nature do what it will. Flow with the aging process, and do so gracefully. You'll have greater peace of mind, I believe, than trying to shape yourself into something unnatural, some ideal that's anything but.