The Rituals Homme Collection Hydration Serum Booster works to deliver a concentrated boost of moisture to help lock in hydration, soothe the skin and refine the look of texture. Vitamin E and hyaluronic acid help to hydrate and comfort, while a unique blend of five algae extracts visibly energises the face for a radiant, healthy‑looking glow. Made with an array of natural‑based ingredients, the lightweight serum suits all skin types and absorbs quickly, leaving skin soft, refreshed and comfortable without heaviness.