Ingredient review
Aluminum Dichlorohydrex PG
INCI: ALUMINUM DICHLOROHYDREX PG
A common antiperspirant active that effectively reduces sweat but may cause irritation for sensitive skin.
In plain English
Aluminum dichlorohydrex PG is a type of aluminum salt used in antiperspirants to block sweat glands temporarily. When applied, it dissolves into the sweat duct and forms a gel-like plug that physically stops sweat from reaching the skin's surface. The 'PG' stands for propylene glycol, which helps stabilize the ingredient and improve its performance. It is not a deodorant—it does not mask or prevent odor, but by reducing sweat, it indirectly helps minimize body odor.
Quick decision guide
Useful, but context matters
Aluminum Dichlorohydrex PG can be useful, but watch for some irritation potential.
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 Aluminum Dichlorohydrex PG.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
strongThere is a stronger practical or research basis for the ingredient role described here.
What it is
A synthetic aluminum complex combined with propylene glycol, designed as an active ingredient in antiperspirants. It is one of several aluminum salts approved by regulators for over-the-counter sweat control.
How it works
When applied to the skin, the aluminum ions dissolve into the moisture on the surface and are drawn into the sweat duct. There, they react with proteins and form a temporary gel-like plug that physically blocks the duct, reducing the amount of sweat that reaches the skin. The effect is not permanent—the plug is naturally shed over time as skin cells turn over.
Pros
Highly effective sweat control
Aluminum dichlorohydrex PG is proven to significantly reduce underarm wetness, often lasting a full day with a single application.
Regulatory approval
It is approved by the U.S. FDA as an over-the-counter antiperspirant active, meaning it has met safety and efficacy standards for consumer use.
Cons and cautions
Potential skin irritation
The ingredient can cause stinging, redness, or itching, especially if applied right after shaving or on broken skin. Users with sensitive skin may need to test or avoid it.
Stain and residue issues
It can leave white marks on dark clothing or a sticky film on the skin, which some find inconvenient compared to clear gel formulas.
Best for
- People who experience moderate to heavy underarm sweating
- Those looking for a reliable, long-lasting antiperspirant
Use caution if
- Individuals with very sensitive skin or a history of allergic reactions to aluminum compounds
- People who prefer aluminum-free or natural deodorant options
Usage tips
Safety summary
Aluminum dichlorohydrex PG is considered safe for topical use by major health authorities including the FDA and the European Commission's Scientific Committee on Consumer Safety. Concerns about aluminum absorption and long-term health effects (e.g., breast cancer, Alzheimer's) have been studied extensively, and current evidence does not support a causal link at the levels used in cosmetics. However, some individuals may experience skin irritation.
Research notes
Multiple studies confirm the efficacy of aluminum salts in reducing sweat production. Research on safety has not found convincing evidence linking topical aluminum to systemic health issues, though ongoing monitoring continues. The ingredient is well-studied and widely used.
Common label clues
- Typical concentration
- Up to 25% in over-the-counter antiperspirants (varies by product type)
- Regulatory status
- Approved by the U.S. FDA as an over-the-counter antiperspirant active ingredient at concentrations up to 25%. Also regulated in the EU under cosmetic regulations.
- Common uses
- Antiperspirants, Deodorants, Sweat-control products
- Environmental note
- Aluminum compounds are mined and processed, which has environmental impacts. Propylene glycol is generally biodegradable, but the overall environmental footprint of antiperspirants is moderate.
Good to know
- The 'PG' in the name refers to propylene glycol, a common cosmetic solvent that helps the aluminum complex dissolve and work more effectively.
- Aluminum-based antiperspirants are different from deodorants—they reduce sweat, not just mask odor.
Common questions
What is Aluminum Dichlorohydrex PG in beauty products?
Aluminum dichlorohydrex PG is a type of aluminum salt used in antiperspirants to block sweat glands temporarily. When applied, it dissolves into the sweat duct and forms a gel-like plug that physically stops sweat from reaching the skin's surface. The 'PG' stands for propylene glycol, which helps stabilize the ingredient and improve its performance. It is not a deodorant—it does not mask or prevent odor, but by reducing sweat, it indirectly helps minimize body odor.
What does Aluminum Dichlorohydrex PG do in a beauty product?
When applied to the skin, the aluminum ions dissolve into the moisture on the surface and are drawn into the sweat duct. There, they react with proteins and form a temporary gel-like plug that physically blocks the duct, reducing the amount of sweat that reaches the skin. The effect is not permanent—the plug is naturally shed over time as skin cells turn over.
Is Aluminum Dichlorohydrex PG safe for most people?
Aluminum dichlorohydrex PG is considered safe for topical use by major health authorities including the FDA and the European Commission's Scientific Committee on Consumer Safety. Concerns about aluminum absorption and long-term health effects (e.g., breast cancer, Alzheimer's) have been studied extensively, and current evidence does not support a causal link at the levels used in cosmetics. However, some individuals may experience skin irritation.
Who should be careful with Aluminum Dichlorohydrex PG?
Individuals with very sensitive skin or a history of allergic reactions to aluminum compounds People who prefer aluminum-free or natural deodorant options
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.