Application of cosmetic raw materials, plant extracts in anti-aging cosmetics

In recent years, with the rapid development of the cosmetics industry and the wide application of the green concept in various industries, people have also put forward the requirements of pure nature and no toxic and side effects in anti-aging cosmetics, which has created a good foundation and premise for the application of natural cosmetic raw materials plant extracts in anti-aging cosmetics. Adding natural plant extracts to cosmetics to realize the anti-aging function of cosmetics has become the development trend of the cosmetics industry. According to the characteristics of skin aging and the specific causes of skin aging, adding natural plant extracts into cosmetics can not only make cosmetics have the basic function of moisturizing, but also further smooth skin, remove skin aging wrinkles, and achieve the purpose of delaying skin aging. 
Plant extract components
Natural plant cosmetic raw materials extracts mainly include α-hydroxy acids, β-hydroxy acids, plant flavonoids, papaya sulfhydrylase, and so on, which can effectively improve the skin aging state and achieve the purpose of delaying skin aging. α-hydroxy acid can effectively penetrate into the stratum corneum of skin, weaken the bonding force between cells in the aged stratum corneum, and promote the metabolism of skin cells, thus achieving the effects of improving the aging state of skin and delaying aging. Compared with traditional fruit acids, β-hydroxyacid has more advantages in improving skin and delaying aging. β-hydroxy acid is more easily absorbed by skin, which makes skin surface cells fall off naturally and promotes rapid regeneration of new cells. At the same time, β-hydroxy acid can also effectively remove the aged keratin in pores and make the skin more delicate. Plant flavonoids can effectively clean free radicals and deposited melanin in the skin, and also accelerate the metabolism of skin cells, thus making the skin more moist and achieving anti-aging functions. Papaya sulfhydryl enzyme, an active factor with high biological activity, is extracted from fresh tender papaya fruit, which can effectively scavenge superoxide radical and hydroxyl radical in the body, reduce the content of lipid peroxide in the skin, and prevent cell aging and delay skin aging.
Plant extract
1. Grape seed extract
Grape seed extracts, cosmetic raw materials mainly include proanthocyanidins, grape seed oil, resveratrol, vitamins, tannins, and so on, all of which have beauty and health care functions. Procyanidins have strong antioxidant capacity; their antioxidant effect is 50 times that of VE and 20 times that of VC, and the bioavailability of grape seed procyanidin extract in the human body is 85%. Procyanidins can inhibit the generation of peroxide caused by ultraviolet radiation on the skin; they can also inhibit the Maillard reaction and inhibit the formation of lipofuscin and senile plaque; they can also inhibit the activity of tyrosinase, which reduces the catechol structure of melanin to a phenolic structure and discolors the pigment. Therefore, procyanidins have the functions of improving skin inflammation, preventing blackening, whitening skin, and resisting aging.
Grape seed oil also contains a high content of VE, which can reach 360μg/g/g.. VE can accelerate the removal of damaged cells and aging cells, protect regenerative cells and newborn cells, and keep moisture, so as to delay skin aging. Grape seed oil has certain antioxidant and anti-aging effects.
2. Tea extract
The main chemical component of cosmetic raw materials, tea extract, is tea polyphenols. Tea polyphenols, also known as tea tannins, are a kind of polyhydroxy phenolic compounds contained in tea, which is called TP for short. Its main components are catechins (flavanols), flavonoids, flavonols, anthocyanins, phenolic acids, depsipeptides, and polyphenols. At room temperature and low concentration, tea polyphenols have strong oxidation resistance. It is a natural antioxidant that can block ultraviolet rays and scavenge free radicals induced by ultraviolet rays, thus protecting the normal function of melanocytes. At the same time, it can also inhibit the activities of tyrosinase and catalase in cells, thus reducing the secretion of melanin and lipid peroxidation, and achieving the effect of freckle removal and beauty. The research shows that the antioxidant activity of tea polyphenols is better than that of vitamin E, and it has a synergistic effect on vitamins C and E..
3. Rhodiola extract
The main chemical components of cosmetic raw materials, Rhodiola extract, are salidroside and flavonoids. Salidroside can not only significantly enhance the skin's ability to resist ionizing radiation, but also prevent the damage of various rays (α, β, γ) to lipids and cell membranes, improve cardiopulmonary function, resist fatigue, protect the immune system, and play an anti-aging role. Flavonoids have superoxide dismutase (SOD) activity and scavenging free radicals, which can repair damaged skin, resist lipid oxidation, and resist aging. In the study of the extraction technology and beauty efficacy of the active components of Rhodiola, the efficacy of the extract was tested by comparing with the positive substances, which proved that Rhodiola extract has the ability of antioxidation and tyrosinase inhibition in vitro, and can be used as an additive for delaying aging and whitening cosmetics.
4. Rose extract
It is found that roses contain a lot of phenols, flavonoids, and polysaccharides, which have good effects of scavenging free radicals and delaying aging. In addition, a large amount of vitamin C contained in roses also has strong oxidation resistance.
Rose extract is rich in nutrients, so it can be used in face cream to lock in the original moisture and nutrients of the skin and play a role in delaying aging. In addition, roses can be used to extract essential oil, which is known as "liquid gold" because of its extremely low yield and high efficacy. While extracting rose essential oil, a large amount of rose pure dew can be obtained. Pure dew is a by-product containing nutrients and active substances obtained by distillation and extraction of essential oil, and it is a 100% saturated distillation stock solution.
There are many kinds of modern cosmetics with different functions, among which the cosmetics containing natural cosmetic raw materials, plant extracts, and having anti-aging function are the most popular ones. However, it is worth noting that according to China's "Evaluation Standard for Cosmetic Efficacy Claims", there is no anti-aging evaluation index in cosmetics, only anti-wrinkle, firming, soothing, exfoliating, and other efficacy evaluations, so the author believes that anti-aging should be regarded as a comprehensive evaluation of these efficacies. With the advent of the aging population, anti-aging cosmetics have a broader development space.