Prose · Shampoo
Prose
Lower PFAS concern for a cosmetics brand; no known water-repellent coating/coating risks, but brand is silent on chemical transparency.
Prose is a personalized hair and skin care brand using liquid and powder formulations typical of mainstream cosmetics. No confirmed PFAS-containing coatings, surfactants, or treatments in published product lines.
Shop Prose on Amazon →Material
Cosmetic formulations (hair/skin care liquids and powders)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Prose shampoos are personalized liquid formulations combining surfactants, conditioning agents, and botanical or synthetic actives tailored to individual hair types. As water-based cosmetics, they rely on preservative systems to prevent microbial growth and emulsifiers to blend oil and water phases. The brand emphasizes clean labeling and has publicly moved away from sulfates and parabens in most formulations, reducing exposure to older-generation preservatives tied to endocrine concerns.
The brand's record and disclosure
Prose publishes ingredient lists and allows customization input, suggesting ingredient transparency as a marketing stance. The brand does not hold third-party certifications (e.g., EWG Verified, Leaping Bunny) and maintains silence on PFAS testing or elimination commitments, which is common in the premium personalized cosmetics space. No recalls or substantiated safety controversies are on public record for Prose shampoos.
How it compares in its category
Prose positions itself as cleaner than mass-market drugstore shampoos, which often retain sulfates and synthetic fragrance blends with higher allergen loads. It sits mid-tier in transparency compared to certified natural brands (e.g., Acure, Burt's Bees) but ahead of conventional brands that withhold ingredient ratios. Personalization is a differentiator, not a safety advantage; formulation risk depends on the specific actives chosen.
If you buy it
Use as directed on the scalp; rinse thoroughly to avoid residue buildup. Prose formulations are not heat-sensitive in the way solid products are, so storage at room temperature away from direct sunlight is sufficient. If scalp irritation or allergic reaction develops after a few uses, discontinue and patch-test the formula on a small area first. Customized batches have typical shelf lives of 12-18 months; discard if separation, odor change, or visible growth occurs.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Fragrance allergens and undisclosed fragrance components
Prose allows fragrance customization but does not itemize fragrance constituents in marketing materials. Synthetic or essential oil fragrances can trigger contact dermatitis or respiratory sensitivity in susceptible users; the personalized formula approach does not reduce this baseline cosmetic risk.
Preservative sensitivity (formaldehyde releasers)
While Prose has moved away from parabens, many liquid shampoos still rely on preservatives like methylisothiazolinone or formaldehyde-releasing agents (e.g., imidazolidinyl urea) to prevent mold and bacterial growth. The brand's silence on preservative choice means users cannot pre-screen for known allergens.
Heavy metals in colorants or botanical extracts
No recalls or testing data on record for Prose shampoos involving lead, cadmium, or arsenic. Botanical ingredients can accumulate trace metals from soil, but established cosmetic regulation and supplier vetting typically keep levels below concern thresholds in reputable brands.
1,4-dioxane contamination in ethoxylated surfactants
Liquid shampoos often use ethoxylated surfactants (e.g., sodium lauryl ether sulfate alternatives) that can harbor 1,4-dioxane as a manufacturing byproduct. Prose does not publish testing data or specifications for 1,4-dioxane limits, leaving exposure uncertain.
Scalp irritation from high pH or over-active ingredients
Personalized formulations may include potent actives (e.g., salicylic acid, zinc pyrithione) at concentrations optimized for the user's stated hair concern. Miscalibration during customization or user skin sensitivity can cause temporary irritation; Prose provides patch-test guidance but does not guarantee all formulas are hypoallergenic.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
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✓Verified PFAS-free by a third party
Puracy
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✓Verified PFAS-free by a third party
Puracy
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⚠Risky category by default
More shampoo grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.