Hyaluronic acid is one of the most popular moisturizing ingredients, found in almost every skincare product. However, if you take a closer look at the ingredient lists of store-bought serums, you’ll notice that most of them are primarily water, thickeners, and fillers, with only a small percentage of actual hyaluronic acid. The truth is, a hyaluronic acid serum doesn’t need any thickeners—hyaluronic acid naturally turns water into a gel, so synthetic additives are used purely to enhance the texture rather than the effectiveness of the product. It’s also worth paying attention to fragrance—many store-bought cosmetics contain fragrance blends with undisclosed ingredients. The general term “parfum” can hide dozens of different…