Hyaluronan
Hyaluronate, Hyaluronic Acid, Biohyaluronic acid
하이알루로닉애씨드
Formula: C28H44N2O23 Molecular Weight: 776.600 Cas No:9004-61-9
Antistatic; Humectant; Moisturising; Skin conditioning

Non-protein mucopolysaccharides, the matrix of the dermis, are excellent moisturizers. The macromolecular hyaluronic acid can absorb 400-1000 times its own weight in water, but its concentration needs to be sufficient to achieve moisturizing effects. It is a water-soluble macromolecule Moisturizing ingredients (animal extracts may have a molecular weight of more than one million, while microbial fermenters have a molecular weight of about 100,000), cannot penetrate into the skin, and their moisturizing ability is better than polyols.
[1] Wikipedia, the free encyclopedia, http://en.wikipedia.org.
[2] 邱品齊,「認識你所不知道的藥妝品:皮膚科醫師特選篇」,大境,2010/03/18。
Chemical formula
y
2015-11-19
people liked

玻尿酸(一百~三百萬水準)。第二要件是,濃度要足夠。1%的膠原蛋白液,就挺難與水有稠度差異了。分子量100萬的玻尿酸1%,具有感稠度,但仍屬於偏稀易流動的。分子量300萬的玻尿酸1%,就具有實感的稠度。但把1%玻尿酸,直接當原液或精華液擦在皮膚上,皮膚反而更乾,算是挺失敗的DIY型配方,沒有商業化的保養價值。
https://www.makehappyskin.com/info.php?infotype1=1&infotype2=10&info=287

a
2016-04-07
people liked

請問市面上所寫"玻尿酸"怎知是動物提取或是微生物發酵?
是不是都是動物性質?

s
2019-12-20
people liked

玻尿酸稱為Hyaluronic acid (Hyaluronan)
首先玻尿酸的分子大小會影響到實際的護膚效果
如果是分子量百萬以上的高分子玻尿酸
主要是當作高分子吸水保濕劑所以是當作保濕的目的使用
如果是5萬到幾十萬的中分子玻尿酸
目前發現會跟皮膚的受體結合對老化肌膚有回春的效果
至於幾千到5萬間的低分子玻尿酸
目前發現會誘發免疫發炎反應及血管增生而在皮膚的傷口癒合有角色
所以可以看出來不同分子量的玻尿酸對於皮膚的功效是不同的

邱品齊-外用玻尿酸真相大公開
https://healthmedia.nownews.com/blog/skindocchiu/index_at2514.html

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