Basel I Switzerland

CITROFOL® AI as a natural deodorising ingredient

To prevent unpleasant underarm odour, deodorants are essential products in most people’s daily hygiene routine. Consumers are becoming more selective when choosing their deodorants and are critical of conventional deodorising ingredients. As a result, there is a growing demand for natural and safe ingredients in the deodorant industry.

CITROFOL® AI, also known as triethyl citrate, is a highly effective deodorising ingredient that is already widely used in formulating personal care products and can be used to formulate natural and aluminium-free deodorants. As 100% bio-based material, it is approved for use in natural personal care products certified according to the COSMOS and NATRUE standard. In deodorants, CITROFOL® AI functions as enzyme inhibitor, suppressing the enzymatic decomposition of sweat components and thus preventing body odour. When a deodorant containing CITROFOL® AI is applied to the skin, a deodorising cycle reaction is initiated. Triethyl citrate is enzymatically hydrolysed to citric acid and ethanol. Citric acid lowers the skin’s pH, deactivating bacterial lipase enzymes and reducing the decomposition of sweat components that cause body odour. The skin’s natural buffer function gradually neutralises the citric acid, leading to an increase in skin pH and the reactivation of the bacterial enzymes. This starts the deodorising cycle with triethyl citrate again.

There are different mechanisms by which deodorising ingredients combat underarm odour. The basis to all of them is the fact that the unpleasant underarm odour is caused by bacterial degradation of sweat components. The reduction of malodour can either be achieved by (1) preventing or decreasing the amount of sweat formed in the armpit, by (2) binding or removing the volatile compounds in sweat that cause the odour, or by (3) preventing the bacterial breakdown of organic compounds. Deodorant formulations often combine different ingredients, such as (1) antiperspirants, (2) odour-covering agents, and odour absorbers, as well as (3) antimicrobial agents, and enzyme inhibitors, to effectively prevent malodour. In recent years, there has been increased concern among consumers about commonly used ingredients like alcohol, triclosan, and aluminium salts. Aluminium-free deodorants have gained popularity as some studies have argued the safety of aluminium salts and suggest a potential link between aluminium absorbed through the skin and breast cancer or Alzheimer’s disease. However, there is currently no scientific evidence that exposure to aluminium from deodorants has a negative effect on health. Nevertheless, consumers are cautious, and many prefer to avoid deodorants containing aluminium.

Natural personal care ingredients with high functionality, like CITROFOL® AI, can help formulate deodorants that consumers desire for more natural and safe products.

For more information about CITROFOL® AI in deodorants, feel free to contact us.

Want to boost the efficacy of CITROFOL® AI in your deodorant? Consider combining CITROFOL® AI with our superior antimicrobial agent zinc lactate. Zinc lactate not only reduces bacteria on the skin but also has skin-soothing and anti-inflammatory properties, making it a valuable addition to deodorants.

For more information about the combination of CITROFOL® AI and zinc lactate also check out our recently launched article.

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