Sun blocking cream

Abstract

The invention discloses sun blocking cream which is prepared from the following raw materials: 35-45 parts of water, 0.03-0.05 part of butylated hydroxytoluene, 10-20 parts of ethanol, 3-5 parts of polydimethylsiloxane, 5-7 parts of C12-15 alcoholic benzoate, 1-3 parts of dibutyl adipate, 5-7 parts of cyclodextrin, 3-5 parts of tocopherol, 0.1-0.3 part of lauryl glucoside, 0.05-0.15 part of trisodium ethylenediamine disuccinate, 0.1-0.3 part of carbomer, 5-7 parts of triethanolamine, 8-18 parts of a sun blocking agent and 10-14 parts of a filming agent. The sun blocking cream disclosed by theinvention is good in stability, has dual ultraviolet ray isolation effects of physical sun blocking and chemical sun blocking, is capable of dually preventing UVA / UVB (Ultraviolet A / Ultraviolet B) rays, is free of adverse chemical preparation, and meanwhile is good in waterproof property and good in waterproof and sweat-resistant effects.

Description

technical field [0001] The invention relates to the technical field of cosmetics, in particular to a sunscreen. Background technique [0002] With the development of society and the improvement of quality of life, more and more people are aware of the damage of ultraviolet rays to human skin. The number of sunscreen products on the market is also increasing, including sunscreen, sunscreen, sunscreen spray, etc. At the same time, there are all kinds of products with high, medium and low sun protection factors, and all sun protection products are mainly based on UV protection. Ultraviolet light is divided into four bands according to wavelength: UVA band, UVB band, UVC band and UVD band. UVA is also known as long-wave dark spot effect ultraviolet rays. The wavelength range of the band is 320-400nm. It has strong penetrating power and can penetrate most transparent glass and plastics. More than 98% of long-wave ultraviolet rays in sunlight can penetrate Through the ozone laye...

AI Technical Summary

Problems solved by technology

UVA is also known as long-wave dark spot effect ultraviolet rays. The wavelength range of the band is 320-400nm. It has strong penetrating power and can penetrate most transparent glass and plastics. More than 98% of long-wave ultraviolet rays in sunlight can penetrate Through the ozone layer and clouds to reach the surface of the earth, UVA can directly reach the dermis of the skin, destroy elastic fibers and collagen fibers, and tan our skin; It has medium penetrating power, and its shorter wavelength part will be absorbed by transparent glass. Most of the medium-wave ultraviolet rays are absorbed by the ozone layer, and only less than 2% can reach the earth's surface. UVB ultraviolet rays have erythema effects on the human body and can promote minerals in the body. Substance metabolism and the formation of vitamin D, but long-term or excessive exposure can make the skin tanned, and cause redness, swelling and peeling

Chemical sunscreens are easier to be absorbed by the skin, and sunscreens with high SPF values ​​are likely to cause skin allergies

However, the disadvantage of chemical sunscreens is that some only resist UVA, some only resist UVB, and the wavelength range of ultraviolet absorption is not wide enough.

The sunscreens currently on the market are usually water-soluble, and people cannot use them when swimming, and they also encounter sun exposure when swimming in the wild, which causes problems for people

Images