President Joe Biden is reportedly so desperate to convince voters he’s vital enough to handle another four years in the Oval Office, that he’s allegedly dropped more than six figures on procedures to look youthful, RadarOnline.com has learned. Plastic surgery experts weighed in on the Democrat’s alleged cosmetic work in a sensational report. Doctors are said to be convinced the frozen-faced commander-in-chief, 81, has had more work nips and tucks than an aging Hollywood diva. “I would estimate that over the years Joe Biden has spent up to $100,000 on plastic surgery,” Beverly Hills surgeon Dr….