COSRX Advanced Vitamin C 23 Booster Set (Vitamin C 23 Serum 20g + 6 Peptide Serum 150ml)

Features

The COSRX Advanced Vitamin C 23 Booster Set combines two high-performance products designed to enhance skin texture, brightness, and elasticity. The set includes the COSRX The 6 Peptide Skin Booster Serum, a versatile, large-capacity "first-step" serum that prepares the skin for subsequent skincare, and the COSRX Advanced The Vitamin C 23 Serum, which features a high concentration of 23% pure Vitamin C for intensive brightening and anti-aging care.

Both products are formulated for efficacy and safety. The COSRX The 6 Peptide Skin Booster Serum is designed for daily use across all skin types, while the COSRX Advanced The Vitamin C 23 Serum utilizes a stabilized dual-layered formula to maximize the benefits of pure Vitamin C while minimizing irritation. The Vitamin C serum is housed in a specialized container designed to block light, heat, and oxygen to delay oxidation.

Benefits

The COSRX The 6 Peptide Skin Booster Serum helps improve skin condition, including firmness, smoothness, pore and sebum care, and skin texture. It is designed to be used immediately after cleansing to boost the absorption and effectiveness of subsequent products. The COSRX Advanced The Vitamin C 23 Serum provides intensive antioxidant, brightening, and anti-aging benefits. It helps reduce the appearance of dark spots, dullness, and signs of early aging, leaving the skin looking clearer and more radiant.

Main Ingredients and their effects

6 Types of Peptides: A complex of six distinct peptides that work synergistically to support skin elasticity, smooth skin texture, care for pores and sebum, and provide soothing benefits. Pure Vitamin C (Ascorbic Acid): A high concentration of 23% pure Vitamin C that provides powerful antioxidant effects, brightens skin tone, and helps address signs of skin aging. Super Vitamin E (Tocotrienol): Works in synergy with Vitamin C to neutralize free radicals and enhance antioxidant protection. Hyaluronic Acid: A hydrating ingredient that helps maintain skin moisture levels, promoting a plump and supple complexion. Niacinamide: Known for its brightening properties, it helps improve skin tone and addresses pigment issues.

Clinical test results

Clinical tests for the COSRX The 6 Peptide Skin Booster Serum showed improvements in skin hydration (+162.50%), skin texture (+76.41%), skin brightness (+37.99%), density (+22.22%), and transparency (+40.11%). Additionally, it demonstrated a reduction in blackheads (-21.95%), whiteheads (-20.91%), excess sebum (-29.48%), and oiliness (-33.34%). The product is confirmed as suitable for acne-prone skin via a non-comedogenic test.

Clinical tests for the COSRX Advanced The Vitamin C 23 Serum showed improvements in dark spot traces (8.87%), skin transparency (15.06%), deep melanin (14.15%), skin radiance (34.81%), skin texture (92.32%), and elasticity (15.07%). It also showed significant improvements in antioxidant activity across the stratum corneum (38.9%), skin lipids (42.6%), and skin proteins (46.8%).

Usage instructions

For the COSRX The 6 Peptide Skin Booster Serum, apply an adequate amount to the face as the first step of your skincare routine after cleansing. Gently pat to aid absorption. You may apply multiple layers for increased efficacy. For the COSRX Advanced The Vitamin C 23 Serum, apply a proper amount after cleansing. Due to its high Vitamin C content, it is recommended to store the bottle upright in a refrigerator (3-10°C) and use within 2 months of opening. If using during the day, always follow with a sunscreen.