於化妝水中含量多在 1% 以下,一般健康的皮膚對此濃度通常不會感到刺激,但當皮膚受傷、發炎、起疹、角質偏薄時,部份可溶化劑就可能會造成刺痛、發癢現象,此成份安全性為 5/5(越高越好)[1]。
就木本宣言的never a dull moment提出查詢:
1) 這產品應該有木瓜及芒果的成份,但為何成份表內全部都只是界面劑及乳化劑?
2) 請問界面劑及乳化劑是否都是化學物質,會傷害皮膚?
謝謝解答!
Polyethylene glycol ester made from glycerin and coconut fatty acids, can be metabolized by malassezia. *Not* safe for malassezia (fungal acne). https://simpleskincarescience.com/pityrosporum-folliculitis-treatment-malassezia-cure/
1.5/5代表意思是最安全
2.介面活性劑不一定會刺激肌膚
3.不一定要加防腐劑,目前最安全的方式是添加抑菌劑,主要是抑制細菌產生,但以使用真空包裝瓶器為主
4.介面活性劑也有天然成分的,不一定都是化學成分.
請問這個界面活性劑屬於哪一個類別,是陰離子型、陽離子型、兩性型、非離子型哪一種?
PEG-7 Glyceryl Cocoate: polyethylene glycol ester made from glycerin + coconut fatty acids. Not safe for fungal acne / Pityrosporum (Malassezia) Folliculitis.
有必要更正一下大家對於所謂天然成分的盲目追求。所謂天然成分,即各種植物萃取成分,也是由不同化學成分組成,是很複雜的混和物而非單一成分,以小黃瓜萃取液為例,就含了酵素、胺基酸、維生素、鐵、銅、錳等成分,而這些成分根本就是大家口中的化學物質。而一種植物萃取成分的組成物質之複雜,令我們很難斷定其會否造成過敏,甚至多種植物萃取混合在一瓶護膚品裡它們之間百多種物質的化學反應也是提高致痘可能性。
簡單而言,大家看到所謂天然,混加了許多植物成分的東西並不一定好,而你們眼中的化學物質,包括各種界面活性劑、防腐劑也不一定壞,當然反過來說也是。因為根本所有成分都是化學物質呀。
非離子界面活性劑
There have been some concerns about the safety of this ingredient because of the presence of ethylene oxide in it. Ethylene oxide can react with other chemicals in a process called ethoxylation, which can lead to contamination by 1,4-dioxane, a dangerous byproduct. This byproduct can be eliminated through controlled purification processes, which is how cosmetic PEG-7 glyceryl cocoate is produced.
The Cosmetic Ingredient Review panel has ruled that PEG-7 glyceryl cocoate is safe as used in rinse-off products and is safe in leave-on products in amounts up to 10%.
https://www.paulaschoice.co.uk/peg-7-glyceryl-cocoate/ingredient-peg-7-glyceryl-cocoate.html