There are many causes of loose, sagging skin, including aging, rapid weight loss, and pregnancy. Learn about ways to prevent and tighten loose skin here.

Loose or sagging skin occurs when internal or external factors affect the key molecules that help keep the skin elastic, firm, and hydrated.

Most people start to experience skin laxity, or loosening, between the ages of 35 and 40 years. Skin laxity that occurs with age is mostly due to a loss of collagen networks, elastin fibers, and hyaluronic acid — a molecule that helps the skin retain moisture.

Weight loss, especially significant or rapid weight loss, and pregnancy can also loosen the skin by stretching skin molecules or changing the structure of the skin.

Several other health and lifestyle factors can also contribute to loose skin, including:

  • menopause
  • ultraviolet (UV) light damage
  • artificial tanning
  • certain medications, such as steroids and corticosteroids
  • skin products or detergents that contain harsh chemicals
  • smoking
  • drinking alcohol

In this article, we discuss popular techniques for tightening loose skin and ways to prevent the skin from sagging.

1. Exercise
How to tighten loose skin
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