Many women experience wider hips after childbirth. Shrinkx Hips helps get back your pre-pregnancy hips in 8 weeks. Shrinkx Hips works thanks to the hormone Relaxin, which loosens pelvic joints and ligaments so baby can pass through the birth canal during childbirth. Relaxin stays in your system for up to 8 weeks, giving you the opportunity to help narrow your hips with the Shrinkx Hips belt. the Shrinkx Hips belt provides constant, even pressure to gently guide hips back to their pre-pregnancy position.