Prose · Shampoo
Prose Alcohol-Free Hair Mask
Lower PFAS concern; typical leave-in cosmetic with no known Teflon-family coating use, but brand offers no transparency.
Prose Alcohol-Free Hair Mask is a rinse-off/leave-in cosmetic containing standard humectants and emollients with no disclosed waterproofing, water-repellent coating treatment, or fluorinated coatings. The brand does not claim PFAS-free status or hold third-party PFAS certifications.
Shop Prose on Amazon →Material
aqueous cosmetic mask (glycerin, humectants, emollients)
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's alcohol-free mask is a water-based emulsion designed to condition hair without drying alcohols. The formulation relies on glycerin (a humectant that draws moisture into hair) and emollients (likely silicones or plant oils) to provide slip and softness. Leave-in masks of this type have no heating requirement and are rinsed out or worn overnight, which eliminates risk of thermal degradation of polymers or volatile organic compound (VOC) release from heat application. The aqueous base and absence of volatile solvents make this a lower-risk category within cosmetics.
The brand's record and disclosure
Prose markets itself as a personalized hair-care brand with direct-to-consumer distribution but offers limited public ingredient sourcing or safety certifications on file. The brand does not advertise third-party testing (dermatological, microbiological, or heavy-metal screening) and maintains a notably quiet stance on PFAS or flame-retardant disclosure. No recalls or safety incidents have been documented for this specific product. Absence of controversy does not equal high transparency; this is a middle-ground position in the personal-care space.
How it compares in its category
Hair masks as a category are lower-hazard than rinse-off products because they have minimal systemic absorption and are used in small quantities on a specific body site. Alcohol-free formulations reduce skin irritation risk versus typical styling sprays or alcohol-based serums. Prose's product sits in the standard commercial cosmetic lane, without claims of organic certification, heavy-metal testing, or PFOA/PFOS avoidance that some premium or clean-beauty brands advertise. Performance and safety profile are likely comparable to mass-market leave-in conditioners from L'Oreal, SheaMoisture, or Cantu.
If you buy it
Apply to damp hair ends and mid-lengths, avoiding the scalp to prevent buildup. No heat requirement, so use as-is or under a shower cap for 10-20 minutes. Replace the jar or container every 6-12 months depending on usage to prevent bacterial or mold colonization in the opened product. If you experience scalp irritation, itching, or contact dermatitis, discontinue and patch-test on your inner arm before resuming; individual sensitivities to fragrances or preservatives can occur but are not predictable from the formula alone.
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 (undisclosed components)
Prose does not list fragrance ingredients separately on publicly available packaging or website materials. Fragrance mixtures in cosmetics commonly contain limonene, linalool, or other common contact allergens; individual sensitivity is unpredictable without full ingredient transparency.
Formaldehyde-releasing preservatives
No evidence that Prose uses formaldehyde releasers (such as DMDM hydantoin or imidazolidinyl urea) in this product. Aqueous formulations typically use phenoxyethanol, sodium benzoate, or potassium sorbate, which do not generate formaldehyde. Formula is not publicly detailed enough to rule this out entirely.
Heavy metals in colorants or mineral particulates
No publicly documented recalls or warnings for heavy metals (lead, cadmium, arsenic) in Prose hair masks. Leave-in products applied to hair rather than ingested carry lower absorption risk, and no third-party testing data on file suggests checking brand sourcing if sensitive to metal contamination.
1,4-dioxane (solvent contaminant in emulsifiers)
Ethoxylated ingredients (commonly used as emulsifiers in conditioners) can carry trace 1,4-dioxane as a manufacturing byproduct. Prose does not disclose whether suppliers use vacuum stripping to remove this contaminant. Residual levels in rinse-out or leave-in masks are typically below 10 ppm and are not regulated by FDA in cosmetics.
Microplastic particles (in exfoliating or texture variants)
This is a conditioning mask, not a scrub, so intentional microbeads are not expected. Some conditioning masks use silica or polyethylene beads for texture; Prose's formula is not documented to include these, but full ingredient confirmation is unavailable without direct brand contact.
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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Puracy
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Puracy
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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.