HIFU Vaginal Tightening HIFU System targets and tightens underlying vaginal tissues by triggering your body’s natural production of collagen—without the need for anesthesia, needles, or surgery of any kind. Vaginal Tightening HIFU System has been clinically proven to noticeably tighten the vagina, reduce labial sagging, improve orgasm quality, reduce vaginal dryness, and improve urinary incontinence.