The function of preservatives

December 14, 2011
Preservatives are those associated with modern society and prosperous technological and economic development of the material, but in today's organic maintenance and environmental beauty trend, many skin care brands began to promote not add preservatives. What is the exactly effect of preservative about skin care? Let's talk about that.
What kind function of preservative? The main addition to the preservatives in addition also contains antibacterial antiseptic, skin care products contain many nutrients, in order not to produce these nutrients bacteria, skin care products cause deterioration of corruption, adding preservatives in skin care products, glutathione inhibit bacterial growth and production, avoid the phenomenon of cosmetic deterioration and maintain produce freshness and holding effect.
Preservatives in a wide range, divided into chemical preservatives, security and non-toxic organic preservatives preservatives. Most commonly seen is the chemical preservatives most commonly discussed is Parabens, now British scientists do for breast cancer cells in vivo study, benzoic acid found in the cell residues, suspected to be carcinogenic phenomenon of acid, but this is only the result of statistical , not used to compare normal tissue, tretinoin so it does not completely determine the benzoic acid esters according to the medical cause cancer. Therefore, dermatologists, the preservative is more likely to cause skin allergy cases only. In fact, a good anti-bacterial acid, irritating low, low price, it is widely used as preservatives in skin care products, cosmetics, but many topics and join to avoid Parabens benzoic acid derivatives, in fact, it is still not good for the skin.
In addition, some chemical species, a security is non-toxic preservatives, such as: three pears acid, three pears potassium, is a preservative, but relatively not toxic, do not harm the human body; vitamin E is preservative effect of many ingredients as the brand, astaxanthin because the vitamin E itself is anti-oxidants, skin care products to maintain itself so easily oxidized, is also often used as a preservative. Many brands to add organic plant extracts as natural preservatives, such as: tea tree oil type, with anti-inflammatory anti-bacterial effect, inhibiting bacterial growth, will not cause harm to humans, but also often see the market's natural preservative.
Perishable products due to general maintenance, it is difficult to achieve completely free of preservatives, so in order to avoid stimulating the skin, the choice of merchandise, recommended allergy products selection without adding preservatives or natural preservatives products, general skin choose chemical of non-toxic, organic and safe use of preservatives in skin care products. Source:http://www.cosprm.com
 

Brief Introduction of Optical Thin Films

December 14, 2011
Film is very common in nature. For example, the bubble surface film, the surface of oil droplets will form a so-called thin-film optical effects, and it will separate light colors. In some biological species, there will be a special film structure formation. For example, the eyes of some nocturnal animals within the tapetum lucidum(such as dogs, sharks, cat). The wings of bee and dragonfly, is a thin film formation also.
There are two main optical thin film research, thin film optics and thin ...

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The purchase and maintenance of canvas bags

December 14, 2011
Canvas bag is made of thick coarse cotton or linen canvas, and it's the name because canvas for first used in the sails. It is usually divided into canvas and fine canvas that two categories canvas. Warp and weft of fine canvas is usually 10 feet / 2 to 21 feet / 6, for the production of labor protective clothing and supplies. After staining, it can be used as shoes, travel bags, backpacks and other fabrics.
With more and more design elements of the canvas bag, canvas market formed a driftwood...

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The natural biological extracts in cosmetics

December 13, 2011
Safety and efficacy of cosmetics is the new era of cosmetics research and development goal, natural biological extracts often have multiple roles, the effectiveness of lasting stability, the role of moderate wide range of applications, no side effects or side effects are minor advantages, its research and development has become a response to return to nature, science and beauty, the latest trends in science and the concept of care.
At present the active ingredient in cosmetics as a natural bio...

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China Fine Chemical Industry Development Analysis

December 13, 2011
In recent years, China's fine chemical industry is relatively fast, the base chemical industry park, is accelerating the construction of large-scale, foreign-round to enter the Chinese market, foreign investment, significantly speeding up. "Eleventh Five-Year" period, China's fine chemical industry, total sales revenue and profit growth rate remained at 15% or more, into a comprehensive, multi-level and wide open, competitive, and new stage of development. "Second five" stages, with the accel...
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Types and use of functional powder coatings

December 13, 2011
Powder coating to powder coating and coating pattern of the formation, solid points can amount to 100%, because do not use solvents, so can reduce the pollution of the environment and save resources, and has the recovery features. Functional powder coating is a special function, to provide special-use surface coating materials. It not only can play the traditional role of protection and decoration, also gives the material a variety of special features, including insulation, electrical conduct...
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The common used hyperkeratosis in cosmetic

December 13, 2011
When the epidermis of skin aging, the metabolic rate will slow down, and the cuticle often can not fall off in time, so that the surface of the skin will be rough. Use a gentle skin exfoliation agent can promote aging of cells in the stratum corneum of the bonding force between the reduced and accelerate cell renewal rate and promote cell death from the other to achieve the purpose of improving the skin condition, have to make the skin smooth, delicate, soft effect on the skin with wrinkles, ...
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The cleaning before glass coating

December 13, 2011
Coated glass for architectural glass are generally coated film. We called the film thickness which is less than 1um film, the film thickness is higher than 1um thick film coating process is called with different materials on the substrate surface to form a new surface method. Many coating methods, vacuum evaporation, vacuum sputtering, chemical reduction, sol-gel method. It requires to have a very strong film adhesion, adhesion is not strong is called coverage. To obtain strong adhesion, it i...
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Features and status of reusable bags

December 13, 2011
Reusable bags, not only just more environmentally friendly than plastic bags, but also can be recycled, durable and strong, most importantly, it can be very beautiful, so that people can not help out to show them, so as to achieve the recycling of the purpose. Makeup bags on top of that with just a little creativity, you can create a wonderful landscape. Film casting method using bags, composite solid, the process is not in the composite adhesive, soft, no plastic feeling, no skin irritation,...
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Five problems about Chinese exports of bulk drugs

December 12, 2011
China is the raw material drug production and exporting countries, but exports are more serious structural defects, the traditional price advantage is gradually lost. Overall, China's current exports of bulk drugs in the following problems:
The first part of the large variety of cyclical excess capacity, price fluctuations. Bulk drugs produced in China are mostly varieties of old, low added value. To 2010, export statistics, for example, exports of goods in the 223 code, the average price of o...

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