Sunscreen lotion and preparation method thereof

A technology of sunscreen lotion and neem, which is applied in pharmaceutical formulations, cosmetic preparations, dressing preparations, etc., can solve the problems of lack of safety, single absorption wavelength, etc., achieve free radical scavenging, good UV absorption, and reduce oxidative damage to cells Effect

Active Publication Date: 2014-05-21
INST OF SCI & TECH GUANGDONG UNIV OF CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of this, the problem to be solved by the present invention is to provide a sunscreen lotion and its preparation method. The sunscreen lotion contains the extract of the natural plant Melia japonica, which overcomes the single UV absorption wavelength of the existing sunscreen lotion and the safety of multiple-use sunscreen lotion. Problems and lac

Method used

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  • Sunscreen lotion and preparation method thereof

Examples

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Effect test

Embodiment 1

[0057] Take the natural plant Neem chrysalis, grind it into a raw material powder with an average particle size of 30 mesh, add 10 times of water, reflux and extract twice for 1 hour each time, concentrate, dry, and pulverize to obtain a dry powder, which is Neem chrysanthemum extract 1.

Embodiment 2

[0059] Take the natural plant Neem japonica, grind it into a raw material powder with an average particle size of 40 mesh, add 8 times 30% ethanol, reflux extraction 3 times, each time for 1 hour, concentrate, dry, and pulverize to obtain a dry powder, which is Neem japonica extract 2.

Embodiment 3

[0061] Take the natural plant neem, crush it into a raw material powder with an average particle size of 50 mesh, add 8 times 60% ethanol, reflux extraction twice, each time for 2 hours, concentrate, dry, and pulverize to obtain a dry powder, which is neem extract 3.

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Abstract

The invention discloses a sunscreen lotion, comprising a thanakha extractive which takes dried tree trunk of thanakha as a raw material, wherein the sunscreen lotion further comprises acceptable carriers and auxiliary materials in a sunscreen product. Besides, the invention also discloses a preparation method of the sunscreen lotion. The sunscreen lotion discloses by the invention contains the extractive of the natural plant thanakha, thus the problems of simplex ultraviolet absorption wavelength of the existing sunscreen lotion and the safety of the sunscreen lotion in repeated use as well as the defect of lack of anti-oxidation are overcome; the sunscreen lotion has a broad-spectrum absorption effect on UVA(Ultraviolet A)\UVB (Ultraviolet B), also has a high absorption effect and relatively high oxidation resistance, and can scavenge free radicals and reduce the injury of the skin caused by the ultraviolet light; furthermore, by being prepared from natural plant, the sunscreen lotion is safe, reliable and free of side effects.

Description

technical field [0001] The invention belongs to the field of chemical and daily chemical products, and relates to a sunscreen lotion, in particular to a sunscreen lotion containing neem extract and a preparation method thereof. Background technique [0002] Prolonged exposure to the sun can lead to skin damage, mainly due to the effects of ultraviolet radiation (UVR). Skin diseases caused by ultraviolet rays will continue to expand as people age. The short-term effects caused by UVR are mainly manifested as sunburn. Erythema occurs 2–24 hours after UVR absorption by photoactive substances in the skin, which is the most common acute UVR effect. This erythema is accompanied by edema, blisters, peeling, and even systemic symptoms in severe cases. Ultraviolet rays (UVB) at 280-320nm are the main components that cause skin erythema. Long-term exposure to the sun may cause diseases such as skin cancer. According to the US 1993 sunscreen TFM (Trial Final Monograph) and the US N...

Claims

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Application Information

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IPC IPC(8): A61K8/97A61K8/06A61Q17/04A61Q19/08
Inventor 宋健平朱伟李奇凤王振
Owner INST OF SCI & TECH GUANGDONG UNIV OF CHINESE MEDICINE
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