putthipong putzi



putthipong putzi

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莫莫,怀孕2个多月,需要把现用护肤品和洗发用品都换成孕妇专柜里的产品吗?听说那个成分更安心,会让母婴更健康,需要吗?


很多护肤品都标榜孕妇可用,是真的可用吗?我们从皮肤角度来分析一下 。


当一个女人幸福的开始备孕,准备生一个宝宝的时候,她会立刻关注饮食
putthipong putzi

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孕期能吃什么、不能吃什么 。。。


当然,她也会关注下面这个
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哪些药物能吃、哪些药物不能吃 。。。


无论是药品,还是食物,毕竟都是吃进肚子里的,一些化学成分进入血液可能会对胎儿产生影响,如下图
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对的,胎儿所需要的营养成分都是来自母亲的血液输送,可以这么说,母亲和胎儿的血液是相通的 。。。难怪饮食和药物要格外注意,以防对胎儿产生不良影响 。


可是,关于孕期是否能用护肤品,却有着很大的争议 。。。护肤品毕竟是涂在孕妇皮肤上的,难道还能进入血液?对胎儿产生影响?


看下面的分析
Structures influencing absorption
To be absorbed through the skin, a chemical must pass through the epidermis, glands, or hair follicles. Sweat glands and hair follicles make up about 0.1 to 1.0 percent of the total skin surface.[2] Though small amounts of chemicals may enter the body rapidly through the glands or hair follicles, they are primarily absorbed through the epidermis. Chemicals must pass through the seven cell layers of epidermis before entering the dermis where they can enter the blood stream or lymph and circulate to other areas of the body. Toxins and toxicants can move through the layers by passive diffusion. The stratum corneum is the outermost layer of the epidermis and the rate-limiting barrier in
absorption of an agent.[4] Thus, how quickly something passes through this thicker outer layer determines the overall absorption. The stratum corneum is primarily composed of lipophilic cholesterol, cholesterol esters and ceramides. Thus lipid-soluble chemicals make it through the layer and into the circulation faster, however nearly all molecules penetrate it to some minimal degree.[5]
Ps: 以上引用自网页:
https://en.wikipedia.org/wiki/Absorption_(skin)


大意是: 化学成分可以被皮肤吸收,极少数会进入血液.


再看下面的分析
A chemical may be directly applied to the skin followed by blood and urine measurements at set time points after application to assess the amount of chemical that entered the body. The concentration in the blood or urine at particular time points can be graphed to show and area under the curve and the extent and duration of absorption and distribution to provide a measure of systemic absorption.
Ps: 以上引用自网页:
https://en.wikipedia.org/wiki/Absorption_(skin)


大意是: 透皮吸收进入身体的化学成分,可以通过血液和尿液的测定来分析吸收的量 。


来看一下,化学成分进入皮肤的途径,如下图
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现在能看的很清楚了,化学成分进入皮肤就这3种方式:


1) 从角质细胞的间隙渗透进入皮肤


2) 通过角质细胞扩散进入皮肤


3) 通过毛孔和汗腺孔进入皮肤(少量)


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