What it is: A first step serum that helps strengthen skin barrier while improving visible signs of aging.                        Skin Type: Normal, Dry, Combination, and OilySkincare Concerns: Fine Lines and Wrinkles, Dullness, Dryness, Redness, Uneven Texture, Oiliness and Loss of Firmness and Elasticity Formulation: Lightweight SerumHighlighted Ingredients:- Sulwhasoo Master Complex™: Helps improve skin hydration, radiance, soothing and anti-aging- Vitamin C Derivative: A stable form of Vitamin C to deliver potent antioxidant benefitsIngredient Callouts: Free of parabens, formaldehydes, formaldehyde-releasing agents, phthalates, mineral oil, retinyl palmitate, oxybenzone, coal tar, and hydroquinone.What Else You Need to Know: A first-of-its-kind, clinically tested activating serum enriched with Ginseng and Korean herb extracts to strengthen the moisture barrier post-cleanse, providing an instant glow and boosting absorption of products that follow. This hypoallergenic formula is safe for even the most sensitive skin.Clinical Results: Based on an 8-week clinical study on 30 women 39 to 60, visible improvements after 4 weeks of use include:- Elasticity +5.9%- Moisture barriers strengthening +9.9%- Hydration +14.5%Based on a 4-week independent consumer study on 600 women ages 25 to 39 after 4 weeks of use:- 96% Agreed their skin texture feels smoother- 93% agreed their skin looks healthy- 92% agreed their skin looks clear and bright