Check the listing for details. Dermalogica Circular Hydration Serum 1oz/30ml NEW IN BOX!. Condition: New. Listed at 37.99 USD. Dermalogica Circular Hydration Serum 1oz/30ml NEW IN BOX! Shipped the same day What it is: A hyaluronic acid serum that hydrates and helps prevent future dehydration. Skin Type: Normal, Dry, Combination, and Oily Skincare Concerns: Fine Lines and Wrinkles, Dryness, and Loss of Firmness and Elasticity Formulation: Lightweight Serum Highlighted Ingredients: - Hyaluronic Acid: Helps penetrate skin's surface for intense hydration. - Algae Extract-Infused Moisturizing Matrix: Binds water to the skin for both immediate and long-lasting hydration. - Polyglutamic Acid from Fermented Soybean: Supports skin's hydration reserves from within. Clinical Results: In an independent clinical test with 30 subjects, 2 applications/day, 28 days: -97% of people experienced more hydrated skin after 20 min hours -87% of people experienced more hydrated skin after 10