什麼是檸檬酸

N 8世紀。 The Medieval scholars in Europe were aware of the acidic nature of lemon and lime juices.歐洲的中世紀學者意識到檸檬和酸橙汁的酸性。 It was first isolated by the Swedish chemist Carl Wilhelm Scheele, who extracted citric acid from lemon juice.它首先由瑞典化學家卡爾·威廉·謝勒（Carl Wilhelm Scheele）分離，後者從檸檬汁中提取檸檬酸。 
Citric acid has a wide variety of uses in cosmetics and skin care products, because of its following properties: It is an antioxidant and preservative – it protects the body cells from the adverse effects of oxidation.檸檬酸具有以下特性，因此在化妝品和皮膚護理產品中具有廣泛的用途：它是抗氧化劑和防腐劑–保護人體細胞免受氧化的不利影響。 It is one of the main ingredients that make a bath bombs.它是製造炸彈的主要成分之一。 It is also used in shampoo to wash out wax and coloring from the hair;它也可用於洗髮水中，以洗去頭髮上的蠟和色素。 and when it is applied to hair, it opens up the outer layer (the cuticle).當將其塗在頭髮上時，它會打開外層（表皮）。 While the cuticle is open, it allows for a deeper penetration into the hair shaft.當表皮打開時，它可以更深地滲透到毛幹中。