Concerns · Body · CityLink Mall
Flat Buttocks Treatment in Singapore
A flatter or lower-sitting buttock usually comes down to muscle, skin and the shape around it. Non-surgical options work on those, not on adding implant-like volume.
Written & medically reviewed by Dr Sin Yong · 8 October 2026
Quick answer
- A flatter or lower-sitting buttock usually comes down to muscle, skin and the shape around it. Non-surgical options work on those, not on adding implant-like volume.
- Non-invasive at SkinRev Lab (CityLink Mall): SKINSCULPT®.
- Medical, performed by Dr Sin Yong at IN Eternity Clinic (Pacific Plaza, Orchard): Non-Surgical Brazilian Butt Lift.
- Assessment first; individual results vary. Medical pricing is given at consultation.
A flat buttock can look like a short, square or low-sitting seat, a lack of curve where the lower back meets the hips, a fold that has deepened under the cheeks, or jeans that sag at the back. People exploring flat buttocks treatment in Singapore often spend long hours sitting, have lost weight, or notice the area has changed shape after pregnancy or with age. Others have always had a flatter profile and simply want more definition. Knowing which group you are in helps set a fair expectation.
The buttock's outline is built from four things. The pelvis and hip bones set the basic frame, including any natural hip dips, and no treatment changes bone. The gluteus maximus, medius and minimus muscles give projection and lift, and they weaken when you sit most of the day. The fat layer adds softness and shape, and its distribution is largely genetic. Finally, the skin and connective tissue hold everything up; when they lose firmness, the buttock can drop and the fold beneath it lengthens.
Non-surgical options act on the muscle, the skin and the contour around the buttock. Strengthening the gluteal muscles can add some projection and lift, and tightening the skin with heat-based energy can firm a soft, low-sitting area. Reducing fullness over the lower back and flanks can make the curve of the buttock stand out more. These approaches refine shape; they do not create a dramatically larger buttock.
“Non-surgical treatment can lift and firm the shape you have, but it will not add the kind of volume that only surgery provides, and we would rather say that upfront.”
— Dr Sin Yong, IN Eternity Clinic
- Structures involved
- Pelvic frame, gluteus maximus, medius and minimus, subcutaneous fat, skin and fibrous support
- Common causes
- Prolonged sitting, low gluteal muscle activity, weight loss, ageing skin, genetic fat distribution
- What cannot change
- Bone structure and the natural width of the pelvis, including true hip dips
- Muscle approach
- High-intensity focused electromagnetic (HIFEM) stimulation triggering strong gluteal contractions
- Skin and contour approach
- Radiofrequency heating of the dermis and fat over the hips and lower back to tighten and refine outline
- How change appears
- Gradually over several weeks as muscle adapts and collagen remodels
What goes where
The honest ladder:
non-invasive first, medical when it is needed
At SkinRev Lab · non-invasive
SKINSCULPT® — HIFEM electromagnetic stimulation drives intense, repeated contractions of the gluteal muscles that are hard to achieve with ordinary exercise, supporting tone and some lift. It works on muscle rather than skin, so it is less helpful when loose skin is the main issue. Read more
At IN Eternity Clinic · Dr Sin Yong
Non-Surgical Brazilian Butt Lift — A radiofrequency-based approach that reduces fullness over the lower back and hips and tightens gluteal skin by stimulating collagen, so the buttock's curve looks more defined. It uses no fat transfer or filler and is performed by Dr Sin Yong at IN Eternity Clinic. How it works
Enquiries to SkinRev Lab about medical treatments are passed to IN Eternity Clinic, where Dr Sin Yong performs them.
SKINSCULPT at SkinRev suits people whose buttocks are mainly flat from low muscle tone, often from desk-bound days, and who want a firmer, slightly lifted shape alongside their own training. See the doctor at IN Eternity Clinic if the skin is soft and hanging, the fold under the buttock has deepened, or there is noticeable fullness over the lower back and flanks blurring the curve. Muscle stimulation is generally not suitable during pregnancy, with metal implants or electronic devices in or near the area, or with recent surgery or hernia, so these need a medical check first. If you want a substantially larger buttock, a surgical opinion is the honest route, and the doctor can discuss the risks involved.
Where this happens
Assessment and non-invasive care — SkinRev Lab, CityLink Mall #B1-28, 1 Raffles Link, Singapore 039393. Underground from City Hall MRT and Esplanade MRT; a short walk from Raffles Place, Marina Bay, Suntec and Bugis. Open daily 11am–8pm.
Medical treatment — IN Eternity Clinic, 9 Scotts Road, #12-01 Pacific Plaza, Singapore 228210, beside Orchard MRT (three stops from City Hall on the North-South line). Mon–Sat 11am–8pm, closed Sunday. Treatments are performed by Dr Sin Yong. WhatsApp +65 8815 3008.
What the research says
The evidence,
with sources
Most of the data on muscle stimulation for the buttocks comes from small studies. One MRI study of seven people found that the volume of the gluteal muscles increased at one and three months after four HIFEM sessions, mostly in the upper buttock, while the fat layer barely changed. A critical review of combined electromagnetic and radiofrequency studies, however, pointed out that all of them were authored by the manufacturer's advisers and that the measured changes may be within the margin of error. That is why we present muscle toning as a supportive option rather than a dramatic one. Larger, independent studies with longer follow-up are still needed before firm conclusions can be drawn.
For skin, a systematic review of monopolar and bipolar radiofrequency devices found measurable improvement in laxity on the body with mostly minor, short-lived side effects. Surgical gluteal fat grafting can add more volume, but an international task force reported that it has carried a higher mortality rate than other aesthetic operations because of fat embolism, particularly when fat is injected into the deep muscle. It also needs a longer recovery. This context is useful when weighing a gentler, non-surgical plan against surgery. Individual results vary.
References
- Palm M. Magnetic resonance imaging evaluation of changes in gluteal muscles after treatments with the high-intensity focused electromagnetic procedure. Dermatol Surg. 2021;47(3):386-391.
- Swanson E. Body contouring with electromagnetic treatment plus radiofrequency: a review. Ann Plast Surg. 2025;94(2):250-256.
- Rohrich RJ, Schultz KP, Chamata ES, Bellamy JL, Alleyne B. Minimally invasive approach to skin tightening of the face and body: systematic review of monopolar and bipolar radiofrequency devices. Plast Reconstr Surg. 2022;150(4):771-780.
- Mofid MM, Teitelbaum S, Suissa D, et al. Report on mortality from gluteal fat grafting: recommendations from the ASERF task force. Aesthet Surg J. 2017;37(7):796-806.
Common questions
Your questions,
answered
What does flat buttocks treatment in Singapore involve without surgery?
Non-surgical care works on three things: building gluteal muscle with HIFEM stimulation such as SKINSCULPT at SkinRev, firming soft skin with radiofrequency, and refining the contour around the buttock by reducing fullness over the hips and lower back. The doctor-led non-surgical buttock lift at IN Eternity Clinic uses radiofrequency for the skin and contour, and does not use fat transfer or filler.
Can flat buttocks treatment in Singapore make my buttocks bigger?
Only modestly. Stronger muscles can add a little projection and lift, and a more defined waist and lower back can make the curve look fuller. These treatments do not add the volume that surgical fat grafting or implants can. If a noticeably larger buttock is your main goal, it is fairer to discuss a surgical opinion and its risks.
Will exercise alone fix a flat buttock?
Targeted training such as hip thrusts, squats and lunges is one of the most effective ways to build the gluteal muscles, and it should be part of any plan. Muscle stimulation adds very strong contractions that are hard to reproduce voluntarily, which some people find useful alongside training. Exercise does not tighten loose skin, though, which is where heat-based treatments help.
Does treatment hurt, and is there downtime?
HIFEM stimulation feels like intense, rhythmic muscle contractions; it is not usually painful, and intensity is increased gradually. Muscles may ache for a day or two, like after a workout. Radiofrequency treatment feels warm, and skin may look pink for an hour or two. Most people return to normal activities straight away with either approach.
How much does it cost?
At SkinRev, SKINSCULPT is S$288. For the non-surgical buttock lift at IN Eternity Clinic, pricing is given at consultation after Dr Sin Yong has assessed your skin, muscle tone and contour, since the number of areas and sessions varies from person to person. You can start the enquiry at SkinRev and it will be routed to IN Eternity Clinic.
How long until I see a change?
Muscle and collagen both respond over weeks, not days. Many people notice firmer muscles within a few weeks of a course of stimulation, and skin tightening tends to develop over the following one to two months. Keeping up gluteal exercise after the course helps maintain muscle gains, as muscle naturally shrinks again without use. Photos taken in the same light and pose help you judge change fairly.