What it is: A first step serum that helps strengthen skin barrier while improving visible signs of aging.                         Skin Type: Normal, Dry, Combination, and Oily Skincare Concerns: Fine Lines and Wrinkles, Pores, Dryness Dullness, Redness, Uneven Texture, Oiliness, and Loss of Firmness and Elasticity Formulation: Lightweight Serum Highlighted 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 benefits         Ingredient 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