Article last updated: October 15, 2024
Aluminum Citrate, also known by its chemical name 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, aluminium salt (1:1), is a compound that finds its way into various cosmetic products. This ingredient is essentially a salt formed from the reaction of citric acid and aluminum. Citric acid, a naturally occurring acid found in citrus fruits, combines with aluminum to create this multifunctional ingredient.
Historically, aluminum compounds have been used for their astringent and antiperspirant properties for centuries. Aluminum Citrate, in particular, has gained popularity in the cosmetic industry due to its effectiveness in reducing perspiration and its ability to act as a deodorant. The journey of Aluminum Citrate into cosmetics began with the broader use of aluminum salts in antiperspirants, which started in the early 20th century. Over time, the specific benefits of Aluminum Citrate were recognized, leading to its inclusion in various formulations.
The production of Aluminum Citrate involves a chemical reaction between citric acid and an aluminum source, typically aluminum hydroxide. This reaction results in the formation of a stable salt that can be easily incorporated into cosmetic products. The process ensures that the final product is safe for use on the skin while retaining the beneficial properties of both its constituent compounds.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Aluminum Citrate:
Aluminum Citrate is widely used as an antiperspirant. This means it helps to reduce sweating by temporarily blocking the sweat glands. When applied to the skin, it forms a gel-like plug that limits the amount of sweat reaching the surface. This can be particularly useful for people who experience excessive sweating, providing them with a more comfortable and dry feeling throughout the day.
Another key benefit of Aluminum Citrate is its astringent properties. An astringent is a substance that causes the contraction of skin cells and other body tissues. This can help to tighten the skin and reduce the appearance of pores. It can also help to dry out oily skin, making it a popular ingredient in skincare products aimed at controlling oil and reducing shine.
Aluminum Citrate also functions as a deodorant. It helps to neutralize body odor by inhibiting the growth of bacteria that cause unpleasant smells. This makes it an effective ingredient in deodorant products, helping to keep you feeling fresh and odor-free throughout the day.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
Aluminum Citrate is generally considered safe for topical use in cosmetic products. However, as with any ingredient, there are potential side effects and considerations to keep in mind.
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Aluminum Citrate during pregnancy and breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice before using products containing this ingredient.
Adverse reactions to Aluminum Citrate are relatively uncommon, but they can occur. To minimize the risk of an adverse reaction, it is recommended to perform a patch test before widespread usage of any product containing this ingredient.
In terms of comedogenicity, Aluminum Citrate has a rating of 1 on a scale of 0 to 5, where 0 is totally non-comedogenic and 5 is highly comedogenic. This low rating means that it is unlikely to clog pores and is generally suitable for individuals prone to acne, blemishes, or breakouts.
