Geek & Gorgeous HA 5 Rich is a hydrating serum formulated with five different types of hyaluronic acid, each with varying molecular sizes and structures to provide layered hydration. It helps plump, soothe, and smooth the skin while supporting the skin barrier. The serum also contains panthenol (Pro-Vitamin B5) for added hydration and soothing, as well as Tremella mushroom extract for antioxidant and water-binding benefits. Its rich, silky gel texture is designed for normal to dry or dehydrated skin, making it less ideal for very oily types, which may prefer the lighter version. The formula is vegan, cruelty-free, fragrance-free, essential oil–free and gluten-free. It is generally well tolerated, with no stickiness, and absorbs quickly into the skin. To use, apply a few drops to clean, preferably damp skin, or mix into moisturizer, in either morning or evening routines. Users often praise it for effectively boosting hydration, strengthening the skin barrier, and leaving the skin plump and comfortable. 30 ml.