Naomi Tennakoon: "Hyaluronic acid is a humectant that is used in personal care products. Humectants work really well as a mechanism to moisturize your skin so you can put high levels of it on in your skincare routine."
After cleansing, press a couple of hyaluronic acid serum drops and use your palms to massage your face. This will activate the product. The moisturizing and firming power of this serum is intensive enough to work on every part of your face.
The serum absorbs quickly and will help hydrate your skin while you sleep.