Aluminum Chlorohydrate

Benefits
Antiseptic

What is Aluminum Chlorohydrate?

Aluminum chlorohydrate is an inorganic coordination complex salt composed of aluminum, chloride ions, and hydroxyl groups, typically produced synthetically for cosmetic applications. It appears primarily in underarm and body antiperspirant formulations, often as a clear, water-soluble solution. In products, it functions through a pH-dependent hydrolysis process: upon skin contact and interaction with eccrine sweat, it forms a temporary gel-like precipitate of aluminum hydroxide polymers. These deposits mechanically occlude the openings of sweat ducts, reducing perspiration flow without penetrating deeply into the skin. Additionally, its astringent properties contract surface proteins for a smoother feel, while mild antimicrobial action targets odor-causing bacteria. This multi-functional mechanism supports its widespread use in personal care items focused on wetness and freshness control.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 2-3 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Antiperspirant
Reduces perspiration by temporarily plugging sweat ducts (commonly with aluminum salts), decreasing wetness in underarm and body antiperspirant products.
Astringent
Creates a temporary tightening and toning effect by contracting surface proteins, helping reduce the look of oiliness and refining feel on skin.
Deodorant agent
Targets malodor by neutralizing odor molecules, inhibiting odor-causing microbes, or adding fragrance notes to improve underarm and body freshness.
Deodorant
Helps control body odor by reducing odor-causing bacteria and/or neutralizing or masking malodor, without necessarily reducing sweat production.

Benefits

Reduces sweat output by forming plugs in duct openings for drier skin.

Tightens and tones skin surface to refine texture and reduce shine.

Neutralizes odors and limits bacterial growth for freshness.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
People with moderate to heavy perspiration seeking dryness.
Individuals with sensitivity to aluminum compounds.
Individuals wanting body odor management without heavy fragrances.
People with open wounds or highly irritated skin.
Those preferring a mattified, less oily underarm feel.
Those with impaired kidney function, per general precaution.

Safety Notes

  • Deemed safe for cosmetic use by regulatory bodies like FDA and CIR.
  • Low systemic absorption observed in typical applications.

Frequently Asked Questions about Aluminum Chlorohydrate

What does aluminum chlorohydrate do in products?

It temporarily plugs sweat ducts to cut perspiration, tightens skin, and curbs odor via antibacterial effects.

Is it suitable for sensitive skin?

Generally low irritation potential, but those with aluminum sensitivity should patch test first.

Does it clog pores?

Rated non-comedogenic, so unlikely to contribute to acne in most users.