棕榈酸(英语：Palmitic acid)，又称软脂酸，IUPAC系统名为十六(烷)酸(英语：Hexadecanoic acid)，是一种饱和高级脂肪酸，以甘油脂的形式普遍存在于动植物油脂中，在自然界中分布很广。棕榈油、棕榈仁油、牛油、乳酪、牛奶及肉类与多种植物油均有着这种脂肪酸，母乳中含量亦相当丰富。

工业上由牛油、猪油等动物脂肪或棕榈仁油等植物油经皂化后制得；棕榈酸阴离子是棕榈酸在生理酸硷值中的观察型态。

https://zh.wikipedia.org/zh-tw/%E6%A3%95%E6%AB%9A%E9%85%B8

【Palmitic Acid】

Rating: GOOD
Categories: Occlusive/Opacifying Agent, Cleansing Agent, Emulsifier

Palmitic acid is a fatty acid found naturally in skin, as well as in palm oil, palm kernel oil, butter, cheese, and meat. It is the most common fatty acid found in animals, plants, and microorganisms. It is used as the basis for many palmitate ingredients, such as isopropyl palmitate. Palmitic acid has many functions in cosmetics, such as a detergent cleansing agent and an emollient.

In a cleanser, it has the potential to be drying depending on which other ingredients it’s combined with and the cleanser’s pH level. In moisturizers, palmitic acid is a very good emollient while its emulsifying abilities help keep unlike ingredients from separating.

Palmitic acid has been determined safe as used in cosmetics when used in concentrations up to 13%.

https://www.paulaschoice.com/ingredient-dictionary/ingredient-palmitic-acid.html