Using a tiny needle stamp to inject a skin-friendly substance called hyaluronic acid under the skin can make dry, aging skin much more hydrated after 12 weeks—better than using a fake treatment—and...

Putting hyaluronic acid under the skin with a special stamp-like tool doesn’t make skin bouncier than using a fake treatment, which means how moist your skin is and how elastic it is might be two separate things.

Getting a shot of hyaluronic acid through a tiny stamp-like device on your skin seems safe — no serious side effects showed up in people who tried it for 12 weeks.

When you inject hyaluronic acid just under the skin, it makes your skin feel more hydrated, bouncier, and smoother—and scientists use this as a gold standard to see if taking hyaluronic acid pills does anything similar.