Why use silicon?
Almost all shampoos in supermarkets, except baby products, contain silicone oil. Why should I add silicone oil to shampoo? Can silicone oil block hair follicles and damage hair?
Silicone oil is viscous and plastic, and has moisturizing and supple effects on hair. Hair grows from the hair follicles of the scalp, and the main component is keratin. There are many uneven scales on each hair. When the hair scales are damaged, they will tilt upwards, which will increase the friction between hairs and make them tangled. More friction will aggravate the damage of the hair scales. When washing your hair, the silicone oil in the shampoo will adhere to the gaps in the hair scales, so that the hair surface will be filled and the hair will feel very soft.
The purpose of shampooing is to remove the dust from the hair and scalp and wash off the excess oil. But when washing your hair, it absorbs water, swells, moistens and softens, and the protective oil on the outside of the fur is also washed away. Anionic surfactant, as the raw material of shampoo, washes the dirty things on the head, but it is adsorbed on the hair under the action of water. When the moisture in the hair dries, the hair explodes because the same sex repels each other. At this time, if you use a plastic comb, it is easy to generate static electricity. The problem of anions can be comprehensively solved by cations, such as quaternary ammonium salt cationic surfactants. But these can't solve the problem of damaged hair scales. Chemical reagents, heat and solar ultraviolet rays used in dyeing hair are more harmful to hair.
Later, people found that oil can solve this problem. Oil lubricates hair and reduces hair damage during combing. It can be found that osmanthus oil and conditioner used by people in the past were mainly oils. PDMS (polydimethylsiloxane) can be well attached to hair because of its inertia and adsorption, filling the damaged part of hair scales and making the hair surface smoother, which is called repair effect. Hair with silicone shampoo is brighter, easier to comb, firmer and smoother. PDMS can also keep the moisture content of hair stable through the formed protective layer.
Effect of silicone oil on scalp health.
The news about hair loss caused by silicone oil. Silicone oil is a macromolecular substance and will not be absorbed by hair follicles. There is not much silicone oil in shampoo. Under the cleaning effect of surfactant and a large amount of water washing, it will not remain on the head. In fact, there are many reasons for hair loss, such as seborrheic alopecia caused by endocrine disorders, mental stress, and even postpartum physiological alopecia. Hair follicle blockage is not the cause of hair loss.
The effect of PDMS on hair care is obvious, especially for the hair that is frequently dyed, and the hair scales of the hair that is frequently dyed are seriously damaged. Because the function of silicone oil is to attach to the hair and fill the damaged and open hair scales, people will worry that it will also deposit on the scalp, blocking pores, causing red swelling, inflammation, acne, hair loss and other adverse effects.
Silicone oil is safe for cosmetics because it is harmless to the skin. Although it can form a hydrophobic film on the skin, it is breathable and will not cause acne, acne, hair loss, allergies and so on. On the contrary, it is often used in products marked A as acne-free or oil-free, which is its advantage over traditional oils.
Most shampoos add a small amount of PDMS, which can achieve certain hair care effect while cleaning hair. In fact, just as its hair care function is limited, the possibility of PDMS remaining on the scalp to block pores is also very low. Because the content of PDMS in shampoo is very small, below 1%, it is almost completely removed by washing with a lot of water under the action of anionic surfactant with cleaning function. Hair conditioner and hair mask containing more silicone oil can be used as long as it is applied to the end of the hair far from the scalp, which can save money. Secondly, the hair scales at the hair roots are generally less damaged and basically do not need nursing. Third, if it is rubbed on the hair roots, it is not only greasy but also heavy and flat.
At present, there are some new components to improve the structure of PDMS, such as etherification or adding amino groups. These new elements have stronger binding ability to hair and greater water solubility than PDMS. Products containing these new ingredients can be attached more effectively with less residue. So friends who are confused by rumors ... >>
Question 2: What does silicone oil-free shampoo mean? Consumers should not be superstitious about "concepts"
Based on the above analysis of the advantages and disadvantages of silicone oil composition, some experts in the daily chemical industry have judged that the so-called "silicone oil-free" hair care products will actually be more colorful in "concept marketing".
Experts believe that "silicone oil-containing" products have no substantial harm to people's health, and "silicone oil-free" products are not so mysterious, just saying that each has its own advantages and disadvantages. Consumers should choose according to their hair characteristics and needs. For brands and manufacturers, the use of the concept of "silicone oil-free" will be conducive to the differentiated positioning of brands and products, especially as domestic brands, which can be distinguished from international brands such as Procter & Gamble. This awareness is understandable.
Peng Rulin's point of view is relatively sharper. He put forward three opinions on the shampoo and hair care brand positioned as "silicone oil-free": First, "silicone oil-free" does not mean that the performance of such products is better than that of products containing silicone oil. Secondly, silicone oil is a common legal additive in international and domestic daily chemical industry. Facts have proved that the products containing silicone oil have no obvious defects. We can only say that different additives have their own advantages and disadvantages, and we can't generalize them absolutely. Third, "silicon-free" brands can promote themselves, but they can't conversely promote that "silicon-containing" products are harmful, otherwise they will be suspected of "belittling competitors" and violating the provisions of China's advertising law on unfair competition.
Generally speaking, the expert's advice to consumers is: don't be superstitious about "concepts", it is most important to choose products that suit you.
Question 3: What is snail shampoo? It's a kind of shampoo, and snail is the brand name. For example, I don't have a high demand for shampoo, so I bought it in the supermarket. I have only seen the brand you mentioned promoted in WeChat business.
Question 4: What is the model of Yashun shampoo? Just one, 300ml.
Question 5: What does silicone oil-free shampoo mean? It means shampoo without silicone oil.
Silicone oil is a lubricating oil. Adding silicone oil to shampoo can enhance the smoothness after washing. At present, silicone oil has been added to mainstream shampoos.
Silicone oil is non-toxic, harmless, will not cause hair loss, and will not cause cancer. Now many rumors about silicone oil shampoo are unfounded.
Personally, I have two kinds of shampoos, one with silicon and the other without silicon. For me, it doesn't matter whether there is silicon in the market or not, but I tell you that if silicone oil is not added, the cost of shampoo can be reduced by 40%. I think you should understand who spread the rumor.
Question 6: What does the white label of shampoo mean? White label means that a trader provides IT services to another company that wants to become a trader, so that it can have its own LOGO, quote customers with its own trademark and become a trader. White label providers help banks expand their existing gold and foreign exchange trading services and OTC online trading mode to all parts of the world through the Internet. In this way, banks do not necessarily need to open relevant business offices around the world. White label providers will help existing brokers to expand from matchmaking trading mode to inquiry trading mode. White label providers provide stable background support for some existing foreign exchange tools (such as charts, analysis, software) providers and information service providers, so that they can provide customers with online foreign exchange trading quotations.
Question 7: What does gbt29679 in shampoo mean? This is the national standard.
GB/T 29679-20 13 shampoo and shampoo
This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules and marks, packaging, transportation, storage and shelf life of shampoo and cream. This standard is applicable to shampoo and shampoo products which are compounded with surfactant as the main active ingredient, and can clean people's scalp and hair and keep their beauty.
Question 8: What does the black label of shampoo mean? Black labels indicate grades.
Grade.
From high to low,
Blue label, gold label and black label in turn, ...
Question 9: What do you mean by whether there is silicon in the shampoo now? Shampoo contains silicon, which can cause hair loss, hair loss and itchy scalp.
Hair is smooth after washing,
Because chemical components such as silicon or dimethylsiloxane are added to shampoo,
The function of this component is to fill the gaps between hair scales.
This produces a smooth touch.
But the impermeability and other inertness of silicon itself,
It will also shrink pores and make the scalp itchy.
It may even be complicated with hair loss and hair loss sequelae.
Question 10: What is the model of snail shampoo? We can talk in private. I'm from Snail Investment Promotion Department, and I have a lot of cash.