Natural plant sunscreen composition as well as preparation method and application thereof in sunscreen products

Abstract

The invention discloses a natural plant sunscreen composition as well as preparation method and application thereof in sunscreen products. The composition is prepared from the following components inpercentage by weight: 1-5% of moisturizer, 0-1% of rheology modifier, 30-50% of alcohol, 2-15% of plant extract compound and 5-20% of nano hemp stalk core powder; the plant extract compound is prepared from an ilex kudingcha extract, a radix scutellariae extract, a fructus rosae roxburgniae extract, a lespedeza extract, a saffron crocus extract and a flos sophorae immaturus extract. Since all components are derived from natural plants, the sunscreen composition disclosed by the invention is safe and mild, realizes an effective protection effect against ultraviolet light and a function of improving skin repairing and light aging resistance, and feels moisturized, smooth and fresh without greasiness.

Description

technical field [0001] The invention belongs to the field of cosmetics, and relates to a natural plant sunscreen composition, a preparation method thereof and an application in sunscreen cosmetics. Background technique [0002] Ultraviolet rays are one of the electromagnetic waves of solar radiation. According to the wavelength of ultraviolet rays, they can be divided into the following three bands: [0003] UV-A segment, with a wavelength of 320-400nm, has strong penetrating power, can directly reach the dermis of the skin, destroy elastic fiber cells and collagen fiber cells, and tan the skin; UV-A acts slowly and lasts, and generally does not Causes acute skin inflammation, but has irreversible cumulative effects on skin damage. [0004] UV-B segment, wavelength 290-320nm, has medium penetrating power, can penetrate the epidermis to reach the surface of the dermis, can cause skin erythema, inflammation and other light damage, which is the root cause of skin sunburn; UV-B...

AI Technical Summary

Problems solved by technology

However, due to the photocatalytic properties of nano-titanium dioxide and nano-zinc oxide at the nano-particle scale, certain photochemical reactions can occur on the skin surface, which will cause a certain risk of damage to the skin. In addition, nano-scale particles are more likely to fall into the pores , not easy to clean

[0009] One type is organic compound sunscreens. This type of sunscreen is firstly an organic compound, and secondly, its molecular structure contains conjugated double bonds. From the perspective of valence bond theory and molecular orbital theory, delocalized π electrons are more likely to absorb a certain band of ultraviolet rays and excite to other tracks, so that this type of organic compound has the function of shielding ultraviolet rays. Some of these sunscreens are prone to photodegradation and lose the function of shielding ultraviolet rays, and some have poor compatibility, which is easy to cause the stability of the product system problems, some with cancer risk

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