The placental serum, which is naturally processing and filtration by the placenta, can be isolated from the umbilical cord blood. Since the placental serum contains as many useful active elements as the placental extracts, it is possible to be utilized in cosmetics to improve the skin condition. These active elements, including: EGF(epidermal growth factor), FGF(fibroblast growth factor), PDGF(platelet derived growth factor), HCG(human chorionic gonadotropin), estrogen, prolactin, and amino acids...etc, can provide the epidermal cells and dermal fibroblasts to proliferate and differentiate. The placental serum also enriches with specific placental proteins, interferon, interleukin-1, and interleukin-2...etc, which have the capacity to modulate the immune response and to repair the micro-abrasive wound of the skin. In stead of placental extracts, the placental serum can be easily isolated and preserves the precious elements without losing during the process of purification. Since it is not allowed in Taiwan to use the xerologus (or allologus) placental extracts for cosmetics in the form of oral intake or injection due to the possible severe allergic reaction, we invent our placental serum rejuvenated beauty solution to be used in the form of local application. The formula of this beauty solution is composed of inactivated placental serum, nature plant fluid, porcine pituitary gland extract, hyaluronic acid, retinoid acid, L-ascorbic acid, glycerin, ethanol, and optiphen. After strict screening, purification, and preparation with our special formula, the placental serum containing entire vital elements can be produced into perfect skin rejuvenated beauty solution for local application. With our new invention, we will provide every woman to use this valuable cosmetic product without any side effect and let the skin look always young and pretty.Keywords: umbilical cord blood placental serum xerologus (animal) placental extracts allologus (human) placental extracts pitui
