Minh, 30 years old, experienced hypothyroidism and gained nearly 10 kg in a few months. After endocrine treatment, his condition stabilized, and his weight returned to nearly its previous level. While his physique became slender again, his double chin remained prominent, and his jawline was almost gone.

Dr. Quach Thi Bich Van, a specialist in Dermatology and Aesthetic Dermatology at Tam Anh General Hospital, Ho Chi Minh City, explained that Minh still had localized fat concentrated mainly in the submental area and near the jaw angle, making his double chin visible when viewed from the side. Additionally, the rapid weight gain and loss caused the skin under his chin and neck to sag slightly, making his jawline less defined and angular than before.

According to Dr. Van, a double chin is an area of fat that tends to appear gradually with age and reduces more slowly than fat in many other body areas. Even when weight returns to normal, some individuals still retain submental fat. If there was prior weight gain, the skin around the chin and neck may also stretch slightly, making the double chin even more noticeable.

The doctor prescribed HIFU technology for Minh's treatment, using high-intensity focused ultrasound waves to deliver energy to the precise treatment depth without damaging the skin surface. This energy helps break down submental fat tissue while stimulating the body to regenerate collagen and elastin, thereby improving skin firmness and sharpening the jawline over time.

A doctor uses HIFU to remove Minh's double chin fat. Photo: Tam Anh General Hospital

Unlike surgical methods, HIFU does not require incisions, leaves no scars, and patients can resume near-normal activities immediately after treatment. However, its effectiveness depends on the amount of submental fat, the degree of skin laxity, and individual body characteristics.

Post-treatment, Minh was advised to maintain a stable weight, follow a balanced diet, and exercise regularly to prevent further fat accumulation under the chin. Additionally, he needs to drink enough water, avoid direct sun exposure on the treated area in the initial days, and attend follow-up appointments to monitor results.

One month after treatment, Minh's submental area became more contoured, and his jawline was more defined than before. The procedure itself only caused a slight tingling and mild tightness.

Doctors recommend that individuals who have controlled their weight, maintained a diet and exercise regimen, but still have an unimproved double chin, should visit a hospital for a direct examination. Depending on the extent of fat accumulation and skin laxity, doctors will advise on appropriate treatment options.

Minh Huong

*Character's name has been changed