【100% Natural Ingredient & Extraction Technology】 BI-SU uses "100% NATURAL SWIFTLET’S NESTS", which contains plenty of nutrients that your body needs, and essentials for your beauty routine. Swiftlet's nest has exceptional high concentration in "SIALIC ACID". We collect "SWIFTLET'S NESTS" that are strictly controlled by the Malaysian government and use our own exclusive extraction technology to obtain high quality essence to deliver the best possible healthy, anti-aging effect to you. 【Beauty Benefits】 Collagen Peptides - High-quality collagen keeps your skin hydrated, boosts moisture retention and impoves the skin's elasticity, soothes your skin. Hyaluronic acid - It helps with anti-aging and hydration in your skin. Glycerin - It is 1 of hydrator. It makes skin appear dewy and smothes skin. EGF - It is one of the most important growth factor proteins for healthy looking skin, as it helps cell turnover to boost the production of collagen, elastin, and hyaluronic acid. 【Who Needs BI-SU Serum】 It is suitable for all skin types. We recommend using the BI-SU Serum if you have concerns about wrinkles, dull skin, etc. It provides excellent moisturizing, brightening effects that helps visibly reduce the appearance of wrinkles and improves the skin texture. It can effectively increase the skin's absorption ability, pair it with our lotion and face cream for optimal results. 【How & When to use】 Take an appropriate amount in your hand and gently blend it into your face. After using toner, the skin absorbs moisture but water can easily evaporate. You can use BI-SU Serum to moisurize you skin and let the nutrients go into the deeper layers of your skin to give you the hydration that you need. BI-SU Serum can be used daily for your skincare routine, AM and PM. 【BI-SU Skin Care Regimen】 Experience the full benefits of our skin care products by using them as a complete skincare regimen. After using the BI-SU lotion, use BI-SU Serum as the 3rd step in your skincare regimen to replenish your skin and let the effective, hydrating ingredients absorb inside and out.