Ingredient | Dicarboxylic Acid
Azelaic Acid
INCI · Azelaic Acid
Related names and forms: Potassium Azeloyl Diglycinate. This list does not indicate synonyms or exact ingredient matches.
Despite the word "acid" in its name, azelaic acid (INCI: Azelaic Acid) is not an AHA (alpha-hydroxy acid) or an exfoliant. It is a nine-carbon dicarboxylic acid and is considered through entirely different pathways from AHAs such as glycolic and lactic acids. It occurs naturally in grains such as wheat, barley and rye; the cosmetic form is usually produced synthetically. The literature frequently studies it in relation to the appearance of redness and comfort (an anti-inflammatory context), balance in oily or acne-prone profiles, and a more even-looking tone (a context associated with tyrosinase activity). Klaris considers these cosmetic appearance effects, not treatment claims. Typical cosmetic concentrations are 5%-10%; higher concentrations (15%-20%) are considered beyond cosmetics and within medical care. Its water-soluble derivative, Potassium Azeloyl Diglycinate, is a lighter, more soluble form. It appears on labels as Azelaic Acid and has a verified individual PubChem record (CID 2266, C9H16O4). Compared with AHAs/BHAs, it is considered relatively more comfortable for sensitive and rosacea-prone profiles.
i. Cosmetic Functions
Frequently Discussed Effects
The following headings summarise areas of effect frequently discussed in the literature; visible results in each area require regular use and a suitable formula.
Potential for Even-Looking Tone
An active frequently studied for its role in a more even-looking skin tone.
Sebum Balance
Offers a balancing aspect for oily and acne-prone profiles.
A Soothing Feel
Can be added to formulas at measured concentrations for rosacea-prone profiles.
Mechanism
What Happens Within the Skin?
The following points summarise mechanisms from dermocosmetic literature in plain English. Klaris presents them as background information to help readers understand the context, not as medical claims.
Step 1
Dicarboxylic Acid, Not an AHA
Despite its name, it is not an AHA or an exfoliant. It is a nine-carbon dicarboxylic acid that does not work through exfoliation and is considered through different pathways.
Step 2
Anti-Inflammatory Context
Frequently cited in the literature in relation to a more comfortable-looking appearance in redness-prone profiles.
Step 3
Tone and Tyrosinase
A more even-looking tone is discussed in the literature in a context associated with tyrosinase activity. This is a cosmetic appearance effect, not a treatment.
Step 4
Sebum and Acne-Prone Profiles
Considered for its balancing aspect in oily and acne-prone profiles.
Step 5
Tolerance in Sensitive Profiles
Compared with AHAs/BHAs, its profile is considered relatively more comfortable for sensitive and rosacea-prone skin.
ii. Role in the Formula
How Is It Read on a Label?
Azelaic acid is typically used at 5% - 10% in cosmetic formulas. Higher concentrations (15% - 20%) may be considered beyond the scope of cosmetic use and are approached with a doctor at this level. For sensitive profiles, it is generally considered more comfortable than traditional AHA/BHA acids.
A Closer Look · pH, Stability, Synergy
The most important distinction when considering azelaic acid in a formula is that it is not an AHA. The word "acid" often leads it to be grouped with exfoliating acids such as glycolic and lactic acids, but azelaic acid is a nine-carbon dicarboxylic acid that works through different pathways, not exfoliation: the literature discusses anti-inflammatory, antimicrobial and tyrosinase-related contexts. Describing it as an acid that peels the skin is therefore scientifically incorrect. Typical cosmetic concentrations are 5%-10%; concentrations such as 15%-20% are considered beyond the scope of cosmetic use and approached with a doctor. Pure azelaic acid is not easy to formulate because of limited solubility and potential crystallisation. Its water-soluble derivative Potassium Azeloyl Diglycinate (PAD) is therefore used as a lighter, easier-to-formulate alternative. However, PAD and pure azelaic acid are not the same and are considered in different contexts. Azelaic acid is discussed in relation to even-looking tone, comfort around redness and the appearance of balance in oily or acne-prone skin. None of these is read as a promise to treat acne, rosacea or dark spots; they concern cosmetic appearance, and a clinical condition calls for specialist assessment. Compared with AHAs/BHAs, it is considered relatively more comfortable for sensitive profiles. When assessing an azelaic acid product, Klaris considers concentration, the form (pure acid or PAD), product type and target profile together.
Typical Concentration Range
5% - 10% (common in cosmetics)
Ingredient Family
Acids
iii. Sensitivity Advisory
A Note on Extra Care in Context
High concentrations of azelaic acid (>15%) may be considered beyond the scope of cosmetic use; discussing this level with your doctor may be helpful. Brief tingling may occur on first use.
A sensitivity advisory is not an instruction for use; where individual health circumstances, pregnancy or known sensitivities are involved, discussing the decision with your doctor may be a more contextual approach.
Common Misconceptions
Frequently Confused Points
Common Belief
Azelaic acid is an AHA and peels or exfoliates skin.
A More Contextual Reading
Azelaic acid is not an AHA but a nine-carbon dicarboxylic acid; it does not work through exfoliation. The word "acid" is misleading: it is considered through different pathways from AHAs such as glycolic and lactic acids.
Common Belief
Azelaic acid treats acne or rosacea.
A More Contextual Reading
In cosmetics, azelaic acid is discussed in relation to comfort around redness and a balanced appearance; it does not carry a treatment claim. Higher concentrations (15%+) fall within prescription or medical care, and clinical conditions call for specialist assessment.
Common Belief
High concentrations (15%-20%) of azelaic acid are better in cosmetics.
A More Contextual Reading
Concentrations such as 15%-20% are considered beyond the scope of cosmetic use and approached with a doctor; the typical cosmetic range is 5%-10%. Whether higher means better depends on context.
Common Belief
Azelaic acid erases dark spots.
A More Contextual Reading
A more even-looking tone is a context associated with tyrosinase activity in the literature, not a promise to erase or treat dark spots. A visible effect and a clinical pigment change are different things.
Scientific Basis
Sources and Their Scope
The following headings indicate areas of research; they are not citations of a specific publication or confirmation that every statement on this page has been verified. The links provided should be read with their individual scope in mind.
- International INCI / CosIng database
- Dermocosmetic research publications
- Regulatory authority documents (EU SCCS, TİTCK)
TİTCK, SCCS and similar regulatory authorities are mentioned in the context of publicly available regulation; Klaris has no official endorsement, partnership or collaboration with these institutions.
Source Links
- Database RecordPubChem | Azelaic Acid Ingredient Record (CID 2266)
Database records provide ingredient identity and registration information; on their own, they do not establish the effect of a finished product or its suitability for a profile. Search links are not specific research papers.
iv. Related Ingredients
Ingredients Often Read Together
v. Acids Family
Other Ingredients in the Same Family
Explore ingredients in the same functional family to deepen your reading of formulas.
vii. Related Concern Guides
Guides That Include This Ingredient
Klaris · Example Analyses
How Does Azelaic Acid Feature
in Your Products?
Explore product examples to see the ingredient list, general assessment and match score that changes with the example profile together.
Masked products and example profiles, not a personal analysis. Profile matching in the app is part of Klaris Premium. The app is currently available in Turkish. An English version is in preparation.