2 results about "Darkening skin" patented technology

This invention discloses a sunscreen and its preparation method, belonging to the field of cosmetic technology. The sunscreen comprises the following components by weight percentage: 8.0%~19.0% chemical sunscreen agent, 0.5%~2.0% bioactive peptide, 0.4%~2% antioxidant, 3.0%~8.0% emollient, 0.1%~0.5% thickener, 0.5%~1.2% preservative, and the balance being water. The chemical sunscreen agent, antioxidant, and bioactive peptide in this invention work synergistically to form a triple protection system of chemical protection, antioxidant protection, and biological protection, further enhancing the protection against ultraviolet radiation and effectively solving the problem of ultraviolet radiation-induced melanin production and skin darkening.

The invention belongs to the technical field of cosmetics, and particularly relates to a preparation method of a perigord truffle extract with whitening, anti-inflammatory, anti-photoaging, anti-wrinkle and skin barrier repairing effects and application of the perigord truffle extract in skin care products. According to the invention, perigord truffle is taken as a raw material, is extracted by an ethanol aqueous solution, is subjected to vacuum concentration, and is separated and recrystallized by using macroporous resin, so that the perigord truffle extract with rapeseed sterol and ergosterol as main active components is obtained. The perigord truffle extract prepared by the preparation method disclosed by the invention has a remarkable effect of inhibiting the formation of melanin, and meanwhile, the perigord truffle extract also has the effects of resisting inflammation, resisting light aging, resisting wrinkles and repairing skin. The perigord truffle extract provided by the invention can be used for relieving complex skin care problems such as skin color darkening, skin damage, light aging and wrinkles caused by ultraviolet rays from multiple levels, and a relatively ideal skin beautifying effect is achieved.