Ingredient review

Cyclohexanediamine Tetraacetic Acid

INCI: CYCLOHEXANEDIAMINE TETRAACETIC ACID

A synthetic helper that keeps your products fresh and effective by neutralizing troublesome metal ions.

beautyskincarechelating agent

In plain English

This ingredient is a chelating agent, meaning it grabs onto tiny metal particles (like iron or copper) that can get into your skincare from water or packaging. By locking them up, it stops those metals from breaking down active ingredients or causing discoloration. Think of it as a bodyguard for your formula, keeping everything stable and working as intended.

Review score

Safety, usefulness, and evidence

3.8Good
3.8/ 5

Potentially useful with some tradeoffs

The evidence base is useful, but some claims depend heavily on the formula.

Risk flags are low for most users, though the finished product can still irritate.

Source
synthetic
Evidence
moderate
Irritation
low
Clogging risk
low
How reviews are scored

Quick decision guide

Useful, but context matters

Cyclohexanediamine Tetraacetic Acid is generally a lower-concern ingredient when the full formula suits your skin.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Cyclohexanediamine Tetraacetic Acid.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.

Score terms in plain English

Irritation risk

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A synthetic compound derived from ethylenediaminetetraacetic acid (EDTA), designed to bind metal ions in cosmetic formulations.

How it works

It forms stable complexes with metal ions (e.g., calcium, magnesium, iron) that are present in water or raw materials. This prevents these metals from catalyzing unwanted reactions, such as oxidation of oils or discoloration, thereby preserving the product's integrity and performance.

Pros

Boosts formula stability

By binding metal ions, it prevents them from breaking down active ingredients like vitamin C or retinol, so your products stay effective longer.

Enhances preservative power

It helps preservatives work better by removing metals that can interfere with them, reducing the need for higher preservative levels.

Cons and cautions

Synthetic nature

It is man-made, which may be a turn-off for those seeking 100% natural or organic skincare products.

Potential irritation at high doses

Though rare in typical concentrations, very high amounts could theoretically cause mild irritation, especially on compromised skin.

Best for

  • Anyone using products with water-based formulas that need stability
  • People with sensitive skin who benefit from preservative-free or low-preservative systems

Use caution if

  • Those strictly avoiding all synthetic ingredients in their skincare routine

Usage tips

Look for it in the ingredient list near the end, as it's used in tiny amounts.
Pair it with antioxidant serums (like vitamin C) to help them stay potent longer.

Safety summary

Considered safe for use in cosmetics at typical concentrations. Low irritation and comedogenic risk. Not a common allergen.

Research notes

Studies confirm its effectiveness as a chelating agent in cosmetic formulations, with a strong safety profile supported by decades of use.

Common label clues

Typical concentration
0.01% to 0.1%
Regulatory status
Approved for use in cosmetics in the EU, USA, and many other regions, with no specific concentration restrictions beyond general safety guidelines.
Common uses
Cleansers, Toners, Serums, Moisturizers
Environmental note
As a synthetic chelator, it may have low biodegradability; however, it is used in very small amounts, minimizing environmental impact.

Good to know

  • It is often used alongside EDTA for a stronger chelating effect.
  • It is water-soluble and works best in formulas with a neutral to slightly acidic pH.

Common questions

What is Cyclohexanediamine Tetraacetic Acid in beauty products?

This ingredient is a chelating agent, meaning it grabs onto tiny metal particles (like iron or copper) that can get into your skincare from water or packaging. By locking them up, it stops those metals from breaking down active ingredients or causing discoloration. Think of it as a bodyguard for your formula, keeping everything stable and working as intended.

What does Cyclohexanediamine Tetraacetic Acid do in a beauty product?

It forms stable complexes with metal ions (e.g., calcium, magnesium, iron) that are present in water or raw materials. This prevents these metals from catalyzing unwanted reactions, such as oxidation of oils or discoloration, thereby preserving the product's integrity and performance.

Is Cyclohexanediamine Tetraacetic Acid safe for most people?

Considered safe for use in cosmetics at typical concentrations. Low irritation and comedogenic risk. Not a common allergen.

Who should be careful with Cyclohexanediamine Tetraacetic Acid?

Those strictly avoiding all synthetic ingredients in their skincare routine

Research sources

Cosmetic Ingredient Review (CIR) Safety AssessmentOpenPubChem Compound SummaryOpenEuropean Chemicals Agency (ECHA) InformationOpen

Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.