zxcvb: 天氣乾冷 先別急著去角質

天氣乾冷 先別急著去角質


16 Aug 2023 at 11:03pm
北京已經開啟“乾冷”模式,冷冽的空氣使皮膚乾燥起皮,去角質的護膚品又火了起來。但是,除掉這些角質層真的是在“護膚”嗎?

錯,角質層還是得要!

皮膚分為表皮和真皮,表皮最外層就是角質層,角質層外側部分主要是已經角化死亡的表皮細胞,於是很多人認為去除這層死皮才算徹底清潔,其實這種做法對皮膚百害無利。

更悲劇的是,角質層會越除越油。

皮膚最外層除了角質層還有一層脂質膜,由皮脂腺分泌的油脂和皮膚表面汗液乳化結合形成。一般我們洗臉會暫時洗掉這層油,不過皮脂腺會再分泌出來。可能很多人覺得這一層油除了油膩,一無是處,但實際上皮脂膜還是有重要作用的。

首先,是保濕作用。脂膜雖然不能吸水,但像保鮮膜一樣,覆蓋在臉上,可以防止水分蒸發,減少水分散失,實現保濕效果。其次,脂膜中的有效成分如脂肪酸、神經酰胺等維持皮膚表面環境呈弱酸犀利士犀利士藥局犀利士價格犀利士ptt犀利士5mg犀利士學名藥犀利士副作用犀利士藥效犀利士購買Cialis犀利士官網



性,此時各種正常菌群和表皮生理代謝功能均處於正常狀態,破壞此環境,將造成皮膚抵禦外界侵蝕能力下降。

因此,如果長期使用去油能力強勁的產品或者清洗過於頻繁,會破壞表皮脂質膜。繼而導致角質層細胞失水、結構紊亂,保濕能力繼續下降,而結構紊亂的角質層細胞容易脫落形成蛻皮,尤其是泡浴和搓澡,對皮膚角質層的傷害更是成倍增加。

皮膚修復角質層的過程很慢,因此會採用應急措施——讓皮脂腺分泌更多油脂來補充脂膜層,這就是我們常說的“越洗越油”。

正確的做法是,選用適合自己膚質的清潔用品,清潔時水溫不高於體溫,並且減少過度洗護,洗後及時補充潤膚油。

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