虽对肌肤无刺激性，但可渗入肌肤，肌肤无法利用，少量时有滋润肌肤效果，大量会造成垃圾堆积(取自张丽卿 博客分享)

低极性

The saturated portion of emollient ingredient squalene, which is a natural component of human skin sebum (oil). It is a wonderfully moisturizing ingredient as well as being a source of replenishing fatty acids and antioxidants.

Dayse# but comedogenic=1/5, it cause acne

For me this ingredient was very comedogenic. I used it once and the next morning i had a big under the skin painful pimple.

@sakura_aimi
I put Timeless Squalane on my 8 y/o son's cheek because he had a dry patch and the next morning he woke up with a deep pimple. I also broke out with several pimples on my cheeks after using Timeless Squalane, but I thought maybe it was something else in my skin care routine. After what happened to my son, I am sure it was the Squalane.

C30H62
422.826 g·mol

Squalane is a hydrocarbon derived by hydrogenation of squalene.
In contrast to squalene, due to the complete saturation of squalane, it is not subject to auto-oxidation.
This fact, coupled with lower costs associated with squalane, make it desirable in cosmetics manufacturing, where it is used as an emollient and moisturizer.
The hydrogenation of squalene to produce squalane was first reported in 1916.

角鯊烷是通過角鯊烯氫化衍生的烴。
與角鯊烯相反，由於角鯊烷完全飽和，因此不易發生自氧化。
這一事實，加上與角鯊烷相關的較低成本，使其成為化妝品製造中的理想之選，在化妝品製造中它被用作潤膚劑和保濕劑。
1916年首次報導了角鯊烯加氫生產角鯊烷的方法。

https://en.wikipedia.org/wiki/Squalane