What it is: A high-speed serum that creates a micro-cloud of moisture, a haven of healthy hydration where skin can thrive.Who it's for: Ideal for those with dry, normal, oily or combination skin types.What it does: Tiny micro-droplets of The Deep Hydration Ferment-with an interactive blend of green, brown and red algae-are designed to penetrate rapidly, revitalizing deep within skin's surface. Lightweight yet deeply replenishing, this powerful hydrator transforms skin with sea-sourced energy for your most radiant, healthy-looking, fresh complexion yet. How to use: Apply onto fingertips and gently sweep 1-2 drops over your face and neck morning and evening. For optimal results, follow with your La Mer moisturizer.Pro tips: Smooth on a second serum after The Revitalizing Hydrating Serum to multitask your way to idyllic radiance. 1 oz. Paraben-free; sulfate-free; phthalate-free