Can New-B eliminate a double chin? Effects, pain, and number of sessions

It is most suitable for a double chin where fat is thickly accumulated under the chin.

The causes of a double chin can be divided into four categories: fat, sagging, a short chin, and aging.

Among these, New-B addresses fat. Therefore, satisfaction is particularly high for those whose submental fat does not decrease despite weight management, and for those whose jawline and neck boundary is indistinct in profile. Its approved indication is limited to submental fat in adults, so it does not include other areas such as cheek fat, arms, or abdomen. Conversely, if the double chin is caused by sagging or a short chin, New-B alone has limitations. In reality, two or three of these causes often occur together, so it is important to first determine the cause of your double chin.

New-B reduces fat, while Ultherapy PRIME® lifts sagging tissue.

The two procedures work on different layers. New-B reduces the amount of fat accumulated under the chin, whereas Ultherapy PRIME® lifts sagging skin and fascia to improve elasticity.

Therefore, if the double chin appears saggy due to decreased skin elasticity without much fat, it can be improved with Ultherapy PRIME®. If fat is thickly accumulated under the chin, New-B is needed. In cases where both fat and elasticity are issues, the two procedures may be performed together. The approach is to reduce volume with New-B and then improve elasticity with Ultherapy PRIME® to prevent the skin from appearing loose after fat reduction.

There is some pain, but the injection was developed to minimize discomfort.

New-B is formulated with a pH similar to the human body, and its main ingredient, cholic acid, has low surfactant activity. This focuses on reducing post-procedure discomfort such as pain, swelling, and bruising.

However, since it is an injection that destroys fat cells, it is not completely without discomfort. For about 20 to 30 minutes immediately after the procedure, there is moderate to severe pain at the injection site, followed by a burning or throbbing sensation. This sensation usually lasts for several weeks and can persist for up to a month. Swelling follows a similar pattern. For about a week after the procedure, swelling is noticeable to others, then gradually subsides, but minor swelling may remain and take up to a month to fully resolve.

Once eliminated, fat cells do not regenerate, so the effect lasts long, and the number of sessions depends on the amount of fat.

Typically, the most common regimen is 2 to 3 sessions, once a month. For those with little fat, one session may suffice, while those with a very thick submental area may need more. Since it dissolves and eliminates the cells themselves rather than just reducing their size, the effect lasts for a long time if weight does not increase again.

In fact, a study observing a similar overseas injection (deoxycholic acid injection) reported that more than 8 out of 10 people maintained the effect 3 years after the procedure, and most maintained it for up to 4 years. However, semi-permanent does not mean the shape is fixed forever. If you gain significant weight, the remaining fat cells under the chin can enlarge, making the area thick again, and as you age, skin sagging can make the submental area appear droopy. Therefore, it is advisable to maintain weight management after the procedure.

(The exact dosage, number of sessions, and whether to combine with Ultherapy PRIME® depend on the amount of fat and skin elasticity, so it is recommended to decide after consulting with a dermatologist.)