3 / which shampoo does not contain silicon?
There are a lot of shampoo without silicone oil. Some brands are really hyped. The quality of shampoo itself is average, but it is only under the banner of "no silicone oil" to attract people. But there are also some old brand shampoos that have always believed in no silicone oil shampoo, such as Avalon shampoo in the United States, ludeqing salicylic acid shampoo, Shiseido water's secret words shampoo, Siyun no silicone water, Italian nabaosi shampoo, South Korea Lu Shampoo and so on, belong to the shampoo with great reputation and good reputation in the industry, which is relatively more reliable. You can choose to use it according to your actual situation.

Summary
In a word, personal experience is the key to whether shampoo is made of silicon or not. No matter how good your theory is, it's not as good as my feeling after I actually use it up. If you feel that the shampoo is always unclean, itchy and heavy, try the silicon free shampoo. There is an unwritten secret in the field of shampoo: no matter how good others say, it doesn't mean that you also think it must be good. The shampoo that suits you is really tried out You may be surprised to try it yourself