Youve probably heard of people having filler injected into their faces for a fuller, more youthful appearance, but did you know people also get filler injected into the backs of their hands? They do. And now its FDA approved.

The Food and Drug Administration recently approved Restylane Lyft , a hyaluronic acid filler, for use in the hands; its the first and only hyaluronic acid injectable gel to be FDA approved for an area other than the face. (Radiesse , a dermal filler of calcium hydroxylapatite, has also been approved by the government for use in the face and hands.)

Filler in the hands is used like filler in other places, to cause a rejuvenating effect by giving more volume and plumpness to an area which has lost some of that, Dr. Michelle Yagoda , a New York-based facial plastic surgeon, told HuffPost. With aging, theres a loss of collagen and elastin, and the skin gets thinner, and in the hand, when that happens, you can see the tendons and the veins in the hands more prominently, and people associate that with aging.

By using filler, Yagoda added, you can plump the back of the hand to make the tendons and veins less visible. People tend to get fillers when they think the appearance of their hands doesnt match their face, giving their age away, Yagoda said.