Skin-whitening anti-aging cosmetic containing Cistanche tubulosa extract and its preparation method

The invention provides a preparation method of a Cistanche tubulosa extract and a skin-whitening anti-aging cosmetic. The preparation method comprises pulverizing, performing crude extraction, centrifugally collecting the obtained crude extract, standing, eluting, and drying to obtain the Cistanche tubulosa extract. The preparation method is simple, and has no pollution. The extract has the content of echinacoside not lower than 25%, the content of verbascoside not lower than 55%, and the content of total glycosides not lower than 80%. Proven by the antioxidant activity test, the Cistanche tubulosa extract has antioxidant, skin whitening and anti-aging effects. The skin-whitening anti-aging cosmetic is prepared by adding the Cistanche tubulosa extract into a cosmetic, is safe and free of stimulation proven by cytotoxicity and safety test, and also has good skin whitening effect.