Thank you for viewing! This is a full 28-day set of the "Yunth Raw Vitamin C Whitening Serum," a hot topic on social media and best cosmetics lists. The fresh raw vitamin C, said to have a "use-by time of just 30 seconds," gently penetrates deep into the skin. 【Product Features】 Individually packaged for freshness: Prevents oxidation as you open it right before use. Quasi-drug whitening care: For those who want to thoroughly address spots and freckles. As a pre-serum: Use immediately after washing your face to refine pores and dullness. A concentrated single drop: A luxurious formula with 100% pure vitamin C, without using water. 【Product Details】 Contents: 1ml x 28 packets (approximately 1 month's supply) Condition: New, unopened, domestic genuine product 【Shipping】 We will ship quickly, usually the same day or the next day, with simple packaging. Immediate purchase is welcome! First come, first served.