Which Is Better For Improving Your Skin Barrier?

Both beta-glucan and hyaluronic acid offer similar benefits, but if you're only going to prioritize one ingredient, it may be worth choosing the former. Why? As it turns out, beta-glucan is found to be more hydrating than hyaluronic acid — 20% more, in fact, according to Preserv Skincare. And unlike hyaluronic acid, which only tends to stay on the skin's surface, beta-glucan goes beyond, targeting other layers of the skin, as well.

In terms of protecting the skin barrier, beta-glucan is the clear winner again. It reportedly shields the skin from viruses, too. "Beta-glucans work by stimulating the macrophages (they work to fight off invading pathogens that can cause infections) and stimulate other immune cells to attack pathogens," dermatologist Dr. Dendy Engelman explains to Byrdie. "Think of them as ringleaders. For those who have compromised skin barriers like eczema or dermatitis, beta-glucan can help fight viruses and pathogens that pass through your skin barrier."