\u00a9 2020 wikiHow, Inc. All rights reserved. Losing weight quickly also heightens the likelihood that you will end up in a cycle of yo-yo dieting. This is demonstrated when a pregnant woman gives birth. By Lindsey Lanquis t wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. While it varies, mild weight loss (think: 20 pounds or less) typically Also: It’s not just how much weight you lose, but your age and skin quality that determines whether or not you’ll experience loose skin after weight loss, he says. If you just diet and do cardio, or diet alone, you’ll lose the mass that plumps up your skin. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. Although it hasn't been tested in people with loose skin related to major weight loss, studies suggest that collagen hydrolysate may have a protective effect on skin's collagen (16, 17, 18).