Commonly known as: Citric Acid Monohydrate, 2-Hydroxypropane-1,2,3-tricarboxylic Acid, 3-Carboxy-3-hydroxypentanedioic Acid.
I.N.C.I. list name: Citric Acid.
Extraction process: Microbial fermentation (Aspergillus niger) of glucose syrup derived from corn.
Source: Plant-based.
Botanical name: Zea mays.
Family: Poaceae.
Extracted part of the plant: Corn starch.
Origin, provenance: China, Austria.
Chemical properties: Alpha-hydroxy tricarboxylic acid (AHA); Molecular mass: 192.124 g/mol; Soluble in water and alcohol; Insoluble in oil; Density: 1.542 - 1.665 g/cm3.
Properties: Emulsion, true aqueous solution.
Required dosage in cosmetic products: /
Function: pH regulator, chelating agent, masking agent.
Specificities: Keratolytic, moisturising, antioxidant, astringent, acidifying, effervescent.
Benefits: All skin types, particularly dull skin, those prone to blemishes and those with superficial marks left by a spot; All hair types, especially dull hair.
Facial Care (lotions, moisturising creams, serums, makeup removers, cleansing gels, masks, eye contour treatments, lash serums/gels);
Body Care (body creams, after-sun lotions, sun creams/sprays, self-tanners, hand creams);
Haircare (shampoos);
Hygiene (shower gels/foams/creams, mouthwashes, toothpastes, bath bombs/effervescent tablets, deodorants).
Store in a dry place, at a temperature not exceeding 30°C and at a humidity level below 70%. Avoid excessive heat for extended periods.
Citric acid is a safe-to-use ingredient. However, it can cause some skin irritations. Avoid direct contact with the eyes and never use it undiluted on the skin.
Citric acid can have a photosensitising effect on the skin when present in high percentages. That's why it's recommended to use a suitable sun protection during the day. As a cosmetic active, it is preferable to use it preferably in the evening. Finally, combining it with other acids (salicylic acid, glycolic acid, etc...) is not recommended.