Key takeaways
- Fat freezing (cryolipolysis) uses cold to injure fat cells, which the body then clears over several weeks.
- According to Cleveland Clinic, changes may start after about 3 weeks, with an average fat reduction of 15–28 percent at around 4 months.
- SLIM Body measures your result on the same day and works on fat, muscle and skin in one 45-minute session.
On this page
Fat freezing (cryolipolysis, often known by the brand name CoolSculpting) cools an area of fat so that the fat cells are injured and cleared by the body over the following weeks, which is why the result shows gradually, over about two to four months. SLIM Body takes a different approach: your fat cells open and shrink, your muscles are activated and SLIM Body supports skin tightening, all in one 45-minute session, and your result is measured the same day. Both are non-surgical; they differ in how they work and when you see the change. (Source: Cleveland Clinic (opens in a new tab))
How fat freezing works
Cleveland Clinic (opens in a new tab) describes cryolipolysis as a non-surgical fat reduction procedure that uses cold temperature to reduce fat deposits in certain areas of the body. Fat cells react to cold more than skin cells do. The cold injures the fat cells, which triggers an inflammatory response, and immune cells then clear the damaged cells from the body. A systematic review in Plastic and Reconstructive Surgery (opens in a new tab) describes the same process and notes that the mechanism is not yet completely understood.
When the result becomes visible
Because the body clears the treated cells over several weeks, fat freezing is not a same-day result. According to Cleveland Clinic, changes may start to show about 3 weeks after treatment, with a clear improvement after about 2 months. Studies have shown an average fat reduction of between 15 and 28 percent at around 4 months after the first treatment. (Sources: Cleveland Clinic (opens in a new tab); Ingargiola et al. (opens in a new tab))
Session, downtime and side effects
Cleveland Clinic states that it takes up to one hour to treat an area and that most people can resume their normal daily activities immediately afterwards. Temporary side effects such as aching, tingling, redness, swelling, bruising and numbness may last from a few days to a few weeks. A rare side effect is paradoxical adipose hyperplasia, in which the treated fat cells grow larger instead of smaller. Fat freezing is meant for localised fat and is not intended for people with obesity. (Source: Cleveland Clinic (opens in a new tab))
What about Emsculpt?
Emsculpt is a different kind of treatment: according to a small MRI pilot study (opens in a new tab) of 22 patients, it works on muscle with electromagnetic stimulation rather than with cold. In that study, the stimulation produced muscle contractions stronger than you can make voluntarily. Two months after four abdominal treatments, the scans showed thinner fat and thicker abdominal muscle. The authors themselves describe the study as a pilot without a control group and call for larger controlled studies.

What SLIM Body does differently
SLIM Body is also non-invasive and painless, with zero downtime. Three things set it apart.
The result is measured on the same day
Your trial starts with a BIA body analysis and measurements at 2–3 areas. After the session we measure again before you leave, so you see the change in centimetres on the same day. The released fat is processed naturally by your body over the next 24–48 hours.
Fat, muscle and skin in one session
During one 45-minute session your fat cells open and shrink, gentle pulses activate your muscles, like a workout without the workout, and SLIM Body supports skin tightening. You do not need to book separate treatments for fat and for muscle.
Six technologies, one session
SLIM Body uses certified European technology, and your therapist adjusts the session to your body as you go.
Which one is right for you?
If you are happy to wait a few months for a gradual change in one area, fat freezing is an established option with published studies behind it. If you want to see a measured result before you leave the studio, and work on fat, muscle and skin together, SLIM Body is built for exactly that. (Source: Ingargiola et al. (opens in a new tab))
Where SLIM fits
SLIM Body is for people who want visible, measured centimetres on the areas that matter to them (belly, waist, thighs or arms) without surgery, without downtime, and with the result measured before they leave. You spend 45 minutes on the treatment bed, your therapist adjusts the session to your body, and you leave with your before-and-after measurements. Lose 2–8 cm total in your SLIM Body trial — or your money back.
Get in touch today.
Your SLIM Body trial: ฿3,990 · 45 minutes · 2–3 areas · with our money-back guarantee
Two studios in Bangkok: SLIM Sukhumvit 24 (BTS Phrom Phong) and SLIM Thonglor 13 (BTS Thong Lo).
- Book online: SLIM Body trial (opens in a new tab)
- LINE: @SLIMBKK (opens in a new tab)
- Phone and WhatsApp: 099-612-9158
- Email: booking@slimbkk.com
- Instagram: @slim.bkk (opens in a new tab)
- Facebook: SLIM (opens in a new tab)
Frequently asked questions
According to Cleveland Clinic, changes may start about 3 weeks after treatment, with a clear improvement after about 2 months. Studies have shown an average fat reduction of between 15 and 28 percent at around 4 months.
Sources
- Fat Freezing (Cryolipolysis) (opens in a new tab)Cleveland Clinic · Retrieved 2 November 2026
- Cryolipolysis for Fat Reduction and Body Contouring: Safety and Efficacy of Current Treatment Paradigms (Ingargiola et al.) (opens in a new tab)Plastic and Reconstructive Surgery, 2015 · Retrieved 2 November 2026
- High intensity focused electromagnetic therapy evaluated by magnetic resonance imaging: Safety and efficacy study of a dual tissue effect based non-invasive abdominal body shaping (Kinney and Lozanova) (opens in a new tab)Lasers in Surgery and Medicine, 2019 · Retrieved 2 November 2026


