A double chin is the dreaded sight faced by many people looking into a mirror。

许多人照镜子时看到自己的双下巴都会吓一跳。

Now, a U.S. company claims to have invented an injection which can banish that chin bulge。

现在，一家美国公司宣称已经研发出一种可以消除下巴赘肉的注射药物。

ATX-101, an experimental drug made by California-based Kythera Biopharmaceuticals, is injected into the skin over a series of treatments spaced no less than one month apart。

该公司名为基西拉生物制药(Kythera Biopharmaceuticals)，总部位于加利福尼亚。其研发出的试验药物ATX-101在一系列的治疗之后不到一个月就可以注射到皮肤中。

The drug is a type of deoxycholic acid - a naturally-occurring molecule that helps the body break down fat, according to Kythera's website。

基西拉公司网站上称该药物属于脱氧胆酸——是一种自然形成的分子，能帮助身体分解脂肪。

It acts 'immediately on targeted fat cells' but is 'rapidly cleared' from the chin, leaving surrounded tissue largely unaffected, Kythera claims。

基西拉表示它能对“目标脂肪细胞”迅速发挥效用，完成使命后会从下巴中“立马消失”，不会对周围组织造成什么影响。

It says fat under the chin is influenced by ageing and genetics, and can often not be changed by diet and exercise alone。

该公司还称下巴中的脂肪会受到衰老和基因的影响，并且不会仅仅因为节食和锻炼就能够有所改变。

While this area of the face is important to patients, it is undertreated, according to Kythera。

基西拉说尽管脸部的下巴部位对于患者来说非常重要，但现在缺少相关的治疗措施。

ATX-101 not yet been approved by the Food and Drug Administration (FDA)， the body that regulates medicines and cosmetics in the U.S。

美国食品和药物管理局尚未批准ATX-101面世。

But in clinical trials the injections were tested on more than 1,600 people, with 90 per cent reporting it reduced the fat under their chin after two years, Kythera said。

不过临床试验中已有超过1600人接受了注射治疗，两年后有90%的患者表示他们下巴上的赘肉已经得到消除。

As part of the trial, ATX-101 was injected up to four or six times, based on the amount and volume of the fat under the chin。

依据下巴中的脂肪含量，试验过程中注射4到6次ATX-101。

However, common side effects included pain in the chin, numbness, bruising, swelling, redness, firmness, itching, a burning or prickling sensation and nodules。

然而也会产生一些常见的副作用，包括下巴疼痛、肌肉麻痹、瘀伤、肿胀，发红、硬化、发痒、产生灼烧和刺痛感以及长出结节。