Products benefits: Reduce the size of enlarged pores, Hyperpigmentation and dark spots, Uneven skin texture, skin to brighten, reducing signs of aging. Key Ingredients - Niacinamide acid + Galatomyces Country of Manufacture: Made in South Korea Expected period: 2week ~ 4week. Test Usage: Please note that all serums can sometimes create irritations for people with very sensitive skin or uncommon allergies. Always test the product on a small area before using it, ideally behind an ear or under the chin. Allow 24 hours to measure skin sensitivity to the product.