Ingredient review
Trisodium Dicarboxymethyl Alaninate
INCI: Trisodium Dicarboxymethyl Alaninate
A modern, eco-friendly alternative to EDTA that helps your products stay effective and stable without irritation.
In plain English
Trisodium Dicarboxymethyl Alaninate is a chelating agent, meaning it grabs onto metal ions (like iron or calcium) that can sneak into your skincare from water or packaging. By locking these metals away, it prevents them from breaking down active ingredients, changing the product's smell or color, or reducing the effectiveness of preservatives. Think of it as a tiny bodyguard for your formula, keeping everything working as intended.
Review score
Safety, usefulness, and evidence
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
Quick decision guide
Useful, but context matters
Trisodium Dicarboxymethyl Alaninate 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.
- Step 1Start with the score, then check the irritation and clogging risk before judging Trisodium Dicarboxymethyl Alaninate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- 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
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A synthetic, biodegradable chelating agent derived from the amino acid alanine. It is designed to bind metal ions in cosmetic formulations.
How it works
It works by forming stable, water-soluble complexes with metal ions (e.g., calcium, magnesium, iron). This prevents these ions from catalyzing unwanted reactions, such as oxidation of oils or discoloration, and also enhances the performance of preservatives by making metal ions unavailable to microbes.
Pros
Gentle on skin
Unlike some harsher chelators, this ingredient has a low irritation and sensitization potential, making it suitable for sensitive skin formulations.
Eco-friendly choice
It is biodegradable and derived from a renewable amino acid source, offering a greener footprint compared to traditional EDTA.
Cons and cautions
Less proven track record
While effective, it hasn't been used as long as EDTA, so long-term formulation data is less extensive.
Performance may vary
In extremely hard water or with very high metal ion loads, it may not be as robust as some traditional chelators.
Best for
- Anyone using products with water-based formulas
- People who want a more environmentally friendly option
- Those with sensitive skin who react to EDTA
Use caution if
- Individuals with known allergies to alanine derivatives (extremely rare)
Usage tips
Safety summary
Trisodium Dicarboxymethyl Alaninate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential. The Cosmetic Ingredient Review (CIR) panel has not specifically reviewed it, but it is widely accepted as a safe alternative to EDTA.
Research notes
Research primarily focuses on its chelating efficacy and biodegradability compared to EDTA. Studies show it effectively binds metal ions and is readily biodegradable, supporting its use as a more sustainable option.
Common label clues
- Typical concentration
- 0.05% to 0.2%
- Regulatory status
- Approved for use in cosmetics globally, including by the EU CosIng database and the US FDA (as a cosmetic ingredient).
- Common uses
- Cleansers, Toners, Serums, Moisturizers
- Environmental note
- It is biodegradable and considered more environmentally friendly than EDTA, which can persist in the environment.
Good to know
- It is often used as a direct replacement for EDTA in 'clean' or 'green' beauty formulations.
- The 'dicarboxymethyl' part refers to its structure that grabs metal ions.
Common questions
What is Trisodium Dicarboxymethyl Alaninate in beauty products?
Trisodium Dicarboxymethyl Alaninate is a chelating agent, meaning it grabs onto metal ions (like iron or calcium) that can sneak into your skincare from water or packaging. By locking these metals away, it prevents them from breaking down active ingredients, changing the product's smell or color, or reducing the effectiveness of preservatives. Think of it as a tiny bodyguard for your formula, keeping everything working as intended.
What does Trisodium Dicarboxymethyl Alaninate do in a beauty product?
It works by forming stable, water-soluble complexes with metal ions (e.g., calcium, magnesium, iron). This prevents these ions from catalyzing unwanted reactions, such as oxidation of oils or discoloration, and also enhances the performance of preservatives by making metal ions unavailable to microbes.
Is Trisodium Dicarboxymethyl Alaninate safe for most people?
Trisodium Dicarboxymethyl Alaninate is considered safe for use in cosmetics at typical concentrations. It has low irritation and sensitization potential. The Cosmetic Ingredient Review (CIR) panel has not specifically reviewed it, but it is widely accepted as a safe alternative to EDTA.
Who should be careful with Trisodium Dicarboxymethyl Alaninate?
Individuals with known allergies to alanine derivatives (extremely rare)
Research sources
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.