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Plastic-Free Rating
Personal Care
Mainstream Brand
Personal Care·Secret

Invisible Solid Antiperspirant (2.6 oz)

D
PFR Grade
Poor — significant plastic content, use with caution
Contains aluminum zirconium tetrachlorohydrex (aluminum-based antiperspirant), synthetic fragrance (phthalates), and BHT. Applied to underarm — close to lymph nodes and breast tissue. Secret is the most popular women's deodorant in the US.
PFR Caution

Antiperspirant deodorant with aluminum-based antiperspirant. Secret is the most popular women's deodorant in the US.

Score Breakdown

How scores are calculated

Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.

Packaging (20%): Is the product packaged in plastic? Is it recyclable?

Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?

Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.

Materials
3
Packaging
3
Transparency
3
Durability
7

This is a rating of this specific product only — not the company. Other products from this brand may score differently.

Last updated: April 6, 2026

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High Exposure Risk — Why This Product Category Matters

Personal care products are applied directly to skin for hours or days. Makeup, lotions, and skincare products contain hundreds of synthetic chemicals, many of which are absorbed into the bloodstream. The FDA does not require pre-market safety testing for cosmetic ingredients.

Synthetic Plastic Content
30%
synthetic plastic by weight

Why We Rated It This Way

Secret contains aluminum-based antiperspirant applied to the underarm — close to lymph nodes and breast tissue. Aluminum compounds are absorbed through skin and have been found in breast tissue. Synthetic fragrance adds phthalate exposure.

Chemical & Health Analysis

Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.

Contains:Plastic tube
1

aluminum

Source

Aluminum-based antiperspirant absorbed through underarm skin

Health Risk

Found in breast tissue, potential endocrine disruption

Who Is Most At RiskAdults using aluminum antiperspirant daily

All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.

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