Polypeptide-Maya blue-like pigment for cosmetics and preparation method of polypeptide-Maya blue-like pigment

The invention relates to the technical field of daily cosmetics, and discloses a polypeptide-Maya blue-like pigment for cosmetics and a preparation method thereof.The preparation method comprises the steps that firstly, organic pigment molecules and attapulgite are evenly mixed, and a Maya blue-like organic/inorganic hybrid pigment is prepared through a high-temperature baking technology; then modifying the Maya blue-like pigment by using isocyanate silane through a surface modification technology to obtain a silane modified Maya blue-like pigment; finally, the polypeptide is grafted to the surface of the Maya blue-like pigment through the coupling effect of isocyanate silane, and the polypeptide-Maya blue-like pigment is prepared. The polypeptide-Maya blue-like pigment prepared by the invention has the effects of safety, environmental protection, anti-inflammation, anti-aging and self-repairing, has good compatibility with skin, and is suitable for the field of cosmetics such as lipstick, foundation cream, e