What is the difference between shampoo and silicone oil? Is it harmful to the human body? How to correctly identify
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Nowadays, shampoo products on the market can be described as dazzling, especially in the past two years without silicone oil shampoo, it is also sought after by everyone, as if silicone-free oil has become a hard standard for everyone to buy shampoo, then you How to choose when buying shampoo? What kind of substance is silicone oil, what is the difference between shampoo products with silicone oil and shampoo products without silicone oil?
Silicone oil is a silicon-containing polymer. Polydimethylsiloxane has very good adsorption properties. It can fill the gaps on the hair and the scales, and form a uniform film on the hair. The hair is very easy to comb and smooth, so some silicone oil will be added to the conditioner and shampoo we use. The presence or absence of silicone oil determines whether the hair is smooth after shampooing.
However, some netizens said that although this silicone oil is harmless, it is insoluble in water, it will block the hair follicles, make the hair dry and damaged, and even lead to hair loss. Even some netizens posted it can quickly detect shampoo with water. Whether the water contains silicone oil, if it is a shampoo with silicone oil, the water will become turbid, the liquid in the whole tube is quite turbid, especially at the bottom there is still a lot of sediment; and without silicone oil, it will not. It can be seen that it is completely transparent, the bottom is also very transparent, and there is no sedimentation at all. Why is this?
Shampoo is a mixture of water-based and oily substances. In theory, they are stratified, but since shampoo contains a large amount of surfactant (also known as emulsifier), it will form delamination. Emulsion, but after adding a large amount of water, the surfactant is diluted, so that oil and water form a layer, while turbidity and stratification are surfactants, and the stratification formed after dilution is only a different degree, simple It is said that ordinary shampoo contains silicone oil. This oily substance is insoluble in water, so no matter how you stir or dilute it will exist in water. On the contrary, there is no such oily substance in the silicone oil shampoo, so when it When mixed with water, it will be diluted, and transparency will appear.
Can you really distinguish all the shampoo products on the market with this method? Turbidity or stratification only indicates that it contains oily substances. It does not indicate whether it contains silicone oil. The shampoo of zero silicone oil replaces the silicone oil with other oily components and acts as a hair care. Therefore, when using the previous method for testing, Oil-water separation occurs, that is, turbidity or stratification. Therefore, detection by this method is not reliable, and it is impossible to detect whether or not silicone oil is contained, and it is not possible to detect which oily component is contained.
As long as it is a shampoo that is bought in a regular supermarket or retail store, there will be a mark on the back that contains polydimethylsilane, which is what we often call silicone oil. Nowadays, it is difficult to find a silicone oil product that can be used to make hair in the back. It becomes smooth after washing. If you feel that your hair is not smooth with silicone oil after shampooing, you can basically be sure that you are using a silicone-free shampoo.
Then everyone worried that the silicone oil shampoo products are really rumored, will affect the scalp, block the hair follicles? In fact, the content of silicone oil in shampoo is very low, and most of it will be washed out during use. There is no evidence that such substances are harmful to the human body, but it also has some shortcomings. Good adsorption capacity, so it is easy to form a thick film on the soft hair, making the hair look thicker and more beautiful, so you can safely use the shampoo containing silicone oil, just choose according to your hair. Shampoo with different silicone oil content can be used.