Citric Acid-Derived Ingredients

Safety Information

Expert Panel for Cosmetic Ingredient Safety

The Expert Panel for Cosmetic Ingredient Safety assessed the safety of citric acid, 12 inorganic citrate salts and 20 citrate esters in 2014 and concluded the following ingredients are safe under current conditions of use and concentration in cosmetics and personal care products:

Inorganic salts Alkyl esters:
Citric Acid Isodecyl Citrate

 

Aluminum Citrate

 

Isopropyl Citrate*

 

Calcium Citrate*

 

Stearyl Citrate

 

Copper Citrate*

 

Dilauryl Citrate

 

Diammonium Citrate

 

Distearyl Citrate*

 

Disodium Cupric Citrate*

 

Tributyl Citrate

 

Ferric Citrate

 

Tri-c12-13 Alkyl Citrate

 

Magnesium Citrate

 

Tri-c14-15 Alkyl Citrate

 

Manganese Citrate*

 

Tricaprylyl Citrate

 

Monosodium Citrate

 

Triethyl Citrate

 

Potassium Citrate

 

Triethylhexyl Citrate
Sodium Citrate

 

Trihexyldecyl Citrate*

 

Zinc Citrate

 

Tri-isocetyl Citrate

 

  Triisopropyl Citrate*

 

  Trilauryl Citrate*
  Trioctyldodecyl Citrate

 

  Trioleyl Citrate*

 

  Triisostearyl Citrate

 

  Tristearyl Citrate*

 

  Ethyl Citrates

 

*Not reported to be in current use. If these ingredients are used in the future, the expectation is that they would be used in product categories and at concentrations comparable to others in this group.

FDA

Citric acid, calcium citrate, potassium citrate, sodium citrate and triethyl citrate are on the U.S. Food and Drug Administration’s (FDA) list of direct food substances affirmed as Generally Recognized as Safe (GRAS). FDA also permits tributyl citrate and triethyl citrate to be used as indirect food additives in some food packaging materials. (21CFR175.300; 21CFR175.320; 21CFR181.27; 21CFR175.105)

All ingredients reviewed by the Expert Panel are included in the EU inventory of cosmetic ingredients (CosIng) and may be used without restrictions in cosmetics and personal care products marketed in Europe according to the general provisions of the Cosmetics Regulation of the European Union.

The safety of citric acid and its calcium, potassium and sodium salts has been assessed by the Joint FAO/WHO Expert Committee on Food Additives (JECFA), which concluded that these additives ‘do not constitute a significant toxicological hazard’ and it was therefore not necessary to set an Acceptable Daily Intake (ADI) limit. As such, the amount in food is limited only by the amount needed to achieve the technical function within the product.

Resources

Citric Acid-Derived Ingredients

What Is It?

Citric acid-derived ingredients are from a naturally occurring acid widely found in plants and animals. Citric acid is common in citrus fruits, particularly lemons and limes. s. Other commonly used natural salts of citric acid include potassium citrate, aluminum citrate, diammonium citrate, ferric citrate, magnesium citrate, monosodium citrate and zinc citrate.

Tributyl citrate and triethyl citrate – organic ester ingredients are made by combining butyl or ethyl alcohol with citric acid – may also be used in cosmetics and personal care products. Other citric acid esters used in cosmetics include Tri-C12-13 alkyl citrate, Tri-C14-15 alkyl citrate, tricaprylyl citrate, triethylhexyl citrate, triisocetyl citrate, trioctyldodecyl citrate, triisostearyl citrate, isodecyl citrate, stearyl citrate, dilauryl citrate and ethyl citrate.

Why Is It Used?

Citric acid and its diammonium, potassium and sodium citrate salts are used to help preserve cosmetics and personal care products by chelating metals that can lead to their deterioration. Other functions of citric acid, its salts and esters include: pH adjuster, buffering agent, cosmetic astringent, cosmetic biocide, hair fixative, oral care agent, plasticizer, skin-conditioning agent – emollient, skin-conditioning agent – miscellaneous, skin-conditioning agent – occlusive, fragrance ingredient and solvent.

Citric acid is also used as the active ingredients in chemical skin peels.

Scientific Facts

The dominant use of citric acid is as a natural flavoring ingredient and preservative in food and beverages for more than 100 years. Because of its effective preservative properties, citric acid can also be found in most canned and jarred foods to prevent botulism food poisoning.