Two new studies published Skin Pharmacology and Physiology find a new type of collagen supplement improves skin elasticity and reduces wrinkles around the eyes by 20 percent after just eight weeks, Fox News reports.

Between the two studies, more than 200 women took Verisol, a collagen supplement that can be added to beauty vitamins and drinks to increase collagen in the skin. 

Four weeks after the women stopped their daily regimen, wrinkle volume was still 11.5 percent less than it was at the start, on average. 

Collagen supplements are a point of debate among dermatologists and doctors because collagen is a protein that, when it enters your stomach, is largely broken down before ever making it to your skin. As a result, most derms would deem collagen supplements ineffective for anti-aging results. Instead, derms typically recommend a topical collagen cream to help boost collagen and achieve the firm, springy skin of decades past. But even creams have their limitations:

“The topical stuff doesn’t last long and it only penetrates the first layer of skin,” says Dr. Shilpi Agarwal, board–certified integrative medicine and family medicine physician in Los Angeles.

These studies, however, focus on a new type of ingestible collagen peptide that is more bioavailable—meaning, it's more easily absorbed by the body. As a result, it may boost collagen in the skin's deeper layers, where it helps reduce the look of wrinkles by plumping and firming the skin.