角鯊烷/ Squalane
桂花保濕噴霧加了「角鯊烷」這隻成份，大家應該都對這個名字不會陌生。不過角鯊烷是如何幫助我們皮膚保隰呢？今日同大家上上皮膚結構課😂
首先我們皮膚最外最外有一層薄薄的保護層叫皮脂膜，有鎖水及抵抗細菌的功能，是皮膚很重要的天然屏障。而皮脂是皮脂膜主要成份，其12-13%是角鯊烯。
角鯊烯是一種很好的滋潤劑，且具防水性。但是隨著年齡增長，皮脂分泌會逐漸減少，加上紫外線的照射、天氣、以及經常過份清潔，使皮脂膜變薄，皮膚水份會容易流失，皮膚比較容易受外界刺激引起敏感。
所以要真加皮膚濕潤度，補給角鯊烯很重要。不過你會問，點解我係用角鯊烷。其實角鯊烯遇到空氣就會好快氧化，十分不穩定。 角鯊烷是經過氫化反應的角鯊烯，一種穩定的活性成份，無色無味、質地輕薄，能減少水份流失，有舒緩刺激及消炎作用。
“Squalane” - most of you are familiar with - is one of the major ingredients in our latest Osmanthus Hydrating Mist. But do you know how does it protect our skin? Let’s have a skin structure lesson today 😂
First of all, on top of the stratum corneum, there is a thin protective lipid film to help our skin locking the moisture and resisting bacteria. This natural skin barrier is comprised mainly of sebum, of which 12-13% are squalene.
Squalene is an excellent emollient and is water resistant. However, sebum secretion will gradually decrease as we age. The daily exposure to UV light and harsh weather, as well as the over-cleaning habit reduce the thickness of this protective lipid film. Skin could suffer more from the TEWL become more sensitive to external stimuli. Therefore, replenishing squalene will help to increase the moisture of skin.
But you will ask, is there a spelling mistake? Why do you use squalane not squalene? In fact, squalene is very unstable as it oxidizes easily when it encounters air. On the other hand, squalane is the hydrogenated version of squalene, which is more stable. It is colorless, odorless, and has a light texture. Adding it to our daily skin care can reduce the TEWL. It also has a soothing and anti-inflammatory effect.