The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Caprylhydroxamic Acid

The Beauty & Personal Care Brand Builder Series

Ingredient Deep Dive

Caprylhydroxamic Acid

The Chelating Preservative Booster

Caprylhydroxamic Acid (CHA) is a coconut-derived chelating agent and preservation booster that works well at skin-friendly, near-neutral pH.

By binding the trace metal ions microbes need and reinforcing the preservative system, it helps keep formulas fresh — a favorite in natural, glycol-based preservation.

Quick Insights

Ingredient Rating:

GOOD

Type of Ingredient:

Chelating Agent and Preservative

Intended Function:

A coconut-derived chelating agent and preservation booster effective at near-neutral pH.

Common Applications:

Used across moisturizers, serums and lotions and treatment formulas.

Target Audience:

Natural and clean-beauty brands building gentle, neutral-pH preservation systems.

Also Known As:

Caprylhydroxamic Acid, CHA

Benefits of Caprylhydroxamic Acid

A coconut-derived chelator and preservation booster effective at neutral pH.

Chelation: Binds trace metal ions that microbes and oxidation reactions rely on.
Preservation Boost: Reinforces the efficiency of the preservative system.
Neutral-pH Friendly: Works where many acids don’t — near skin pH.
Natural-Compatible: Coconut-derived; suits natural preservation systems.
Formula Stability: Helps protect color and scent over shelf life.

How It Works

Caprylhydroxamic Acid tightly binds metal ions (like iron) that microorganisms need to grow and that catalyze oxidation; removing them starves microbes and slows degradation. Because it stays effective near neutral pH, it pairs with glycols (e.g. glyceryl caprylate/glycols) to form gentle, modern preservation systems.

Formulating with Caprylhydroxamic Acid

Caprylhydroxamic Acid is used at low levels, typically as part of a glycol-based preservation blend, added to the water phase. Confirm the finished product passes challenge testing and observe good manufacturing practice.

Safety Analysis

Caprylhydroxamic Acid is well tolerated at typical use levels. As always, substantiate the finished product’s safety (e.g. patch / HRIPT testing) in line with MoCRA requirements.

References

https://incidecoder.com/ingredients/caprylhydroxamic-acid

https://cosmeticanalysis.com/cosmetic-ingredients/caprylhydroxamic-acid

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