Aluminum Chlorohydrex Pg: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
Share:
Inside this article:

All information on this page is verified using The Personal Care Products Council's (PCPC) INCI database. Our ingredient analyses are based exclusively on PCPC's technical data to ensure accuracy and reliability.

What Is Aluminum Chlorohydrex Pg?

Aluminum Chlorohydrex Pg is a compound created when aluminum chloride hydroxide reacts with propylene glycol, a common carrier liquid. The result is a stable complex that blends the sweat blocking power of aluminum salts with the skin friendly feel of propylene glycol. First explored in the mid-20th century as brands searched for gentler antiperspirant options, it soon replaced harsher aluminum salts in many personal care lines.

Production starts with purified aluminum salts that are carefully mixed with pharmaceutical grade propylene glycol under controlled heat and pH. This process binds the metal salt to the glycol, reducing irritation while keeping its ability to plug sweat ducts.

You will usually spot Aluminum Chlorohydrex Pg in stick and roll-on antiperspirants, spray deodorants, cream deodorant balms, underarm wipes, foot sprays and even some body powders aimed at moisture control.

Aluminum Chlorohydrex Pg’s Cosmetic Benefits/Uses

Here is what this multitasker brings to the formula:

  • Antiperspirant – Forms temporary plugs in sweat glands which reduce wetness and help keep underarms and other areas dry for hours
  • Astringent – Tightens skin surface proteins leading to a smoother feel and a quick drying finish that many users enjoy
  • Deodorant – Minimizes body odor by cutting down the moisture that bacteria thrive in and by mildly suppressing the bacteria themselves

Who Can Use Aluminum Chlorohydrex Pg

Most skin types tolerate Aluminum Chlorohydrex Pg well. It suits dry, normal, oily or combination skin because it stays on the surface targeting sweat glands rather than penetrating deeply. Sensitive or compromised skin may occasionally feel stinging since aluminum salts can be mildly irritating, especially if the area is freshly shaved or broken.

The compound is synthetic and contains no animal derived material so it is suitable for vegetarians and vegans. Propylene glycol is produced from petroleum or plant sugars and the aluminum salt is mineral based.

Current safety assessments have not flagged special risks for pregnant or breastfeeding women when the ingredient is used as directed in topical products. Absorption through intact skin is extremely low. That said this is not medical advice and anyone who is expecting or nursing should show the product to a healthcare professional before regular use just to be safe.

Aluminum Chlorohydrex Pg does not make skin more sensitive to sunlight and does not interfere with sunscreen performance.

Because it focuses on sweat control it is also useful for athletes and people who experience excessive perspiration on hands, feet or underarms.

Potential Side Effects/Adverse Reactions

Reactions to topical Aluminum Chlorohydrex Pg differ from person to person. The effects listed below are only possibilities and are unlikely for the average user when the ingredient is formulated and used correctly.

  • Mild stinging or burning on freshly shaved or broken skin
  • Temporary redness or itching in people with sensitive skin
  • Dry patches or tight feeling if applied too frequently
  • Contact dermatitis in rare cases of allergy to aluminum salts or propylene glycol
  • White residue on clothing if the product is over applied

If any persistent irritation or unexpected reaction occurs stop use and consult a healthcare professional.

Comedogenic Rating

Rating: 0 (non-comedogenic). Aluminum Chlorohydrex Pg is water soluble and sits mainly on the surface of the skin where it creates temporary plugs in sweat ducts. It does not contain heavy oils or waxes that can block pores and the propylene glycol portion is also rated 0, so the combined complex is very unlikely to trigger comedones. Therefore it is generally safe for people who are prone to acne or breakouts. Because it is hygroscopic it may even help keep the area drier which further reduces pore-clogging risk.

Summary

Aluminum Chlorohydrex Pg works as an antiperspirant, mild astringent and deodorant. It forms micro plugs in sweat glands to cut wetness, tightens surface proteins for a smoother feel and limits odor by starving bacteria of moisture. The ingredient shows up in a wide range of mainstream sticks, roll-ons, sprays and wipes since it balances sweat control with a low chance of irritation, making it more popular than older aluminum salt options. Safety reviews find minimal systemic absorption and few risks when used on healthy skin. As with any new personal care product a quick patch test is a smart idea to rule out individual sensitivity.

Was this article helpful?
More from Glooshi:
ADVERTISEMENT
Get all our top headlines in beauty.
Delivered right to your inbox each week. Zero spam, all goodness, opt-out at anytime.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Get the latest beauty news, top product recommendations & brand-exclusive discount codes direct to your inbox.
Send good feedback:

All feedback is greatly appreciated, anonymous, and will be used to improve the quality of our articles.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Send bad feedback:

All feedback is greatly appreciated, anonymous, and will be used to improve the quality of our articles.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Search