Product Overview】 Yunth's Pure VC Whitening Serum is a serum specifically designed to bring out the clarity of your skin. It comes in a set of 28 single-use vials, each containing 1ml, making it easy to use. 【How to Use】 The effective period is only 30 seconds, so it is recommended to apply it to the skin quickly. Using it in a fresh state maximizes its effectiveness. 【Materials and Manufacturing】 Made in Japan, it uses PVC materials and is of a quality you can use with confidence. It is composed of skin-friendly ingredients and is suitable for those with sensitive skin. - Brand Name: Yunth - Product Name: Pure VC Whitening Serum - Contents: 1ml x 28 vials - Country of Manufacture: Japan - Effective Period: 30 seconds - Material: PVC