After one CoolSculpting® session, you may start to see changes in as quickly as three weeks as your body naturally eliminates dead fat cells, but most clients notice a reduction in the fat layer within 2 to 4 months after the procedure. The fat cells will continue to process and eliminate for up to 6 months with an expectation of a 20-25% reduction with each treatment. For this reason, identifying your treatment goals during your consultation is key.