Cryo skin tightening is a non-invasive cosmetic procedure that uses cold temperatures to tighten loose or sagging skin, Through

Cold exposure: The skin is exposed to very cold temperatures Which causes the blood vessels in the skin to constrict.  
Vasoconstriction: The constriction of blood vessels reduces blood flow to the skin, which can help to reduce inflammation and swelling.  
Collagen production: The cold temperatures also trigger the production of collagen, a protein that gives the skin its structure and elasticity.  
Skin tightening: The increased collagen production helps to thicken the skin and improve its elasticity, Which leads to a reduction in the appearance of wrinkles and fine lines.