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A kind of sunscreen and its preparation method and application

A technology for sunscreens and additives, applied in the field of skin care products, can solve the problems that reactive oxygen species cannot be removed by sunscreens, the protection is not complete, and the secretion of sweat glands is affected, so as to achieve a good ability to scavenge reactive oxygen radicals and protect from damage. , the effect of inhibiting photolysis

Active Publication Date: 2021-05-28
HUANGHE S & T COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional ultraviolet absorbers are organic compounds such as cinnamate, salicylate, benzophenone derivatives, etc., which can reduce or completely absorb ultraviolet radiation, but the protection against UVA segment ultraviolet rays is not complete enough, and high concentration may cause inflammation , allergies and other side effects; ultraviolet shielding agent (also known as ultraviolet scattering agent), is nano-scale TiO 2 , ZnO, can reflect and scatter ultraviolet light in the whole area, but the transparency is poor, and it is easy to deposit a white layer on the skin surface and fall off. Excessive use can block pores, affect sweat gland secretion, and even cause skin diseases, etc.
The active oxygen species in skin cells caused by excessive ultraviolet radiation cannot be removed by traditional sunscreens, so the oxidative damage caused by UV radiation is also a problem that traditional sunscreens cannot solve

Method used

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  • A kind of sunscreen and its preparation method and application
  • A kind of sunscreen and its preparation method and application
  • A kind of sunscreen and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A sunscreen, made of the following components by mass percentage:

[0034] Sophora japonica extract 8%, Houttuynia cordata extract 2%, fucoidan 8%, aloe vera extract 2%, glycerin 10%, sorbitol trioleate 10%, vitamin E 5%, deionized water 55%.

[0035] The preparation methods of Sophora japonica extract, Houttuynia cordata extract, fucoidan and aloe extract are as follows:

[0036] The preparation method of Huai Mi extract is as follows: wash Huai Mi, put it in an oven at 50° C. to dry for 4 hours, cool after the drying stops, crush the cooled Huai Mi through 200 meshes, and obtain Huai Mi coarse powder; Coarse powder and distilled water are placed in a container at a ratio of 1g: 20mL, then leached under conditions of 40°C, ultrasonic power of 500W, and ultrasonic frequency of 40KHZ for 1.5h, and the filtrate is collected by filtration; The filter residue and distilled water are placed in a container at a ratio of 1g: 15mL, and then leached under the conditions of 45°C...

Embodiment 2

[0044] A sunscreen, made of the following components by mass percentage:

[0045] Sophora japonica extract 6%, Houttuynia cordata extract 2%, fucoidan 5%, aloe extract 2%, glycerin 15%, sorbitol trioleate 10%, vitamin E 5%, deionized water 55%.

[0046] The preparation method is the same as in Example 1, except that the formula in Example 2 is changed to that of Example 1, and the sunscreen prepared in Example 2 is an emulsion.

Embodiment 3

[0048] A sunscreen, made of the following components by mass percentage:

[0049] Sophora japonica extract 3%, Houttuynia cordata extract 2%, fucoidan 3%, aloe vera extract 2%, glycerin 15%, sorbitol trioleate 10%, vitamin E 5%, deionized water 60%.

[0050] The preparation method is the same as in Example 1, except that the formula in Example 3 is changed to that of Example 1, and the sunscreen prepared in Example 3 is a spray.

[0051] Performance testing of sunscreens:

[0052] 1. Detection method

[0053] (1) Determination of free radical scavenging effect

[0054] Use ethanol to prepare the sunscreen finished products prepared in Examples 1 to 3 into active ingredient solutions with a concentration of 1% (w / v), take 2 mL of the active ingredient solution and 1,1-diphenyl - Add 2 mL of 2-picrylhydrazine (DPPH) solution (the solvent of which is ethanol) into the same stoppered test tube, shake well; let stand at room temperature for 30 minutes, and measure the absorbance...

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Abstract

The invention discloses a sunscreen and its preparation method and application. The sunscreen is composed of the following components in mass percentage: Sophora japonica extract 3-8%, Houttuynia cordata extract 1-2%, fucoidan 3% ~ 8%, aloe extract 1 ~ 2%, additives 25 ~ 30%, the balance is deionized water. The formula is prepared by adding conventional excipients according to the conventional process to make a solution, suspension, emulsion, cream, ointment, gel, milk, skin care lotion, powder, soap, oil, dry powder, liquid foundation, wet powder or spray. The sunscreen agent is preferably applied in the preparation of sunscreen skin care products. Adding fucoidan in the present invention can protect the skin as a powerful antioxidant, and at the same time improve the skin care and sunscreen effect of the product; the present invention has good effects in absorbing ultraviolet rays, removing free radicals, protecting epidermal cells, etc., and achieves good Sunscreen effect; the present invention protects the skin from UVA, UVB ultraviolet absorption and anti-oxidation dual pathways.

Description

technical field [0001] The invention belongs to the technical field of skin care products, and relates to a sunscreen and its preparation method and application. Background technique [0002] With the destruction of the ozone layer caused by air pollution, the intensity of ultraviolet (UV) radiation on the ground continues to increase, and excessive ultraviolet radiation induces the occurrence of skin diseases, such as dermatitis, xeroderma pigmentosa, skin cancer, etc. Ultraviolet wavelengths are divided into three sections: UVA (320-400nm), UVB (290-320nm), and UVC (100-290nm). UVA causes skin darkening, pigmentation and skin aging, and even causes skin cancer, such as melanoma, etc. UVA can also increase the level of free radicals and active oxygen in skin cells, and indirectly damage the skin. UVB mainly acts on the epidermis, causing immediate and severe skin damage, causing sunburn, and excessive radiation can cause skin immune reactions, leading to skin cancer, and i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K8/9794A61K8/9789A61K8/73A61Q17/04A61Q19/08
CPCA61K8/73A61K2800/5922A61Q17/04A61Q19/08A61K8/9789A61K8/9794
Inventor 李丽妍黄涛兰翀
Owner HUANGHE S & T COLLEGE
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