什么是 Is The Chemistry Behind The 洗发水's Cleaning Job?
中文
什么是 Does 洗发水 Do?
You may think 你的 hair is dirty if you did not wash it 的 days, 和 yes, it does need some cleaning, but 你的 hair is not dirty as you think. That is unless you are purposely playing around 的 mud or having food fights with others where it lands 的 你的 hair. The accurate way 到 describe 你的 hair that you have not washed 的 some time is that it is dull 和 greasy. That is because sebum is fatty substance that comes from glands 的 你的 scalp, 和 you have it throughout 你的 skin.Too much sebum also can result 的 acne on 你的 face 和 can cause 你的 face 到 feel greasy same way as 你的 hair does if you do not wash it 的 days. However, you need sebum 到 keep 你的 skin protected as well as 你的 hair 和 hair follicles. Your hair has healthy shine when it is clean 和 的 good health because 的 healthy levels 的 sebum.
That is because substance coats 和 protects outer keratin coating 的 every strand, which is why it has lovely shine.
However, if you do not wash 你的 hair very often, levels 的 sebum will become unbalanced, 和 that not only risks you developing acne, but it will cause 你的 hair 到 appear dirty.
Once sebum accumulates, that will cause hair strands 到 clump together, 和 that causes 你的 hair 到 appear greasy 和 dull. Additionally, pollen, dust, 和 other chemicals will attach themselves 到 sebum, 和 that is how you end up with "dirty" hair.
The one thing 到 know about sebum is that it is hydrophobic, which will make 你的 skin 和 hair waterproof.
Therefore, you can wash away dirt, dust, pollen, 和 other particles. However, you can never wash away oil 和 sebum regardless 的 how much water you use. That is why you need shampoo 到 do job.
洗发水 Can Work Its Magic
何时 you are ready 到 wash 你的 clothes, you know that you do not end up with clean clothes if you do not use detergent.The same goes 的 你的 skin which is why you need soap. Therefore, shampoo is essentially detergent. Whether it is laundry detergent or shampoo, detergents work as surfactant, which reduces surface tension 的 water. It helps stop it from sticking 到 itself 和 encourages it 到 bind with other particles, including oil. There is part 的 detergent molecule that is hydrophobic as that is hydrocarbon part.
That part 的 molecule is what causes oils 和 sebum 到 bind 到 it. That is 的 addition 到 any styling products that have oil 的 them.
The molecules 的 detergent also have hydrophilic part which means it responds very well 到 water. Therefore, when you wash 你的 hair, you are sweeping away shampoo. You are also removing sebum 和 other oils 和 dirt along with it. That is primary way how shampoo cleans 你的 hair. However, there are other ingredients 的 shampoo that deserve credit 的 doing their job too.
什么是 Ingredients In 洗发水 Help Clean Your 头发?
You don't want shampoo that only cleans 你的 hair. You want one that can wash 你的 hair 和 nourish it by promoting healthy appearance. That is why you have ingredients 的 你的 shampoo that can do that. In addition, there are conditioning agents that will help replace protective coating after washing 你的 hair, add shine, smooth cuticle, 和 help detangle 你的 hair.Finally, shampoo contains fatty alcohols that will keep static 和 frizz at bay.
The shampoo also contains protectants such as sunscreen 和 heat protectants, which can help protect 你的 hair from sun 和 damage from heat. In addition, there are also chemical protectants 的 shampoo, which can help prevent chemical damage from treatments 和 swimming.
There are also functional ingredients that keep mix 的 shampoo healthy 和 can help prevent mold 和 bacteria from growing 的 it.
In addition, some preservatives can help increase shelf life. Finally, cosmetic ingredients do not affect how shampoo washes 你的 hair, but colorants 和 fragrances.
However, one type 的 shampoo would not work 的 specific kind 的 hair. There are also other ingredients 的 shampoo designed 的 colored hair, dry hair, oily hair, 和 normal hair. Many shampoos can include sulfates which can dry hair, 和 if you have dry or colored hair, you will want 到 avoid shampoo with sulfates.
Therefore, all shampoos work same way, but not all 的 them are same as they should not be.
Does Lathering Up Clean Your 头发 More?
Many shampoos contain ingredients that cause lathering, but lathering 的 itself is not going 到 help clean 你的 hair 的 any way at all. Many shampoos have lathering agents because consumers like them, 和 it has nothing 到 do with improving shampoo.Therefore, if you like lather, you will want 到 go 的 shampoo that provides good lather because it has plenty 的 agents that cause it.