Function of Beauty · Shampoo
Function of Beauty Straight Hair Shampoo
Lower concern; typical shampoo with no known PFAS drivers, though brand silent on sourcing.
Function of Beauty Straight Hair Shampoo is a liquid cosmetic with no protective coatings, water-resistant treatments, or fluorinated additives indicated in standard formulations. The brand does not disclose PFAS status.
Shop Function of Beauty on Amazon →Material
aqueous shampoo formulation; no protective coating or water-repellent coating treatment typical
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
Function of Beauty Straight Hair Shampoo is a water-based liquid formulation, typically containing surfactants (cleansing agents), preservatives, conditioning polymers, and fragrance or fragrance compounds. Aqueous shampoos lack the coating, heat exposure, or chemical reactivity that trigger hazards in cookware, textiles, or sealed packaging. The primary exposure route is dermal (skin) and respiratory (inhalation during use), both presenting lower systemic risk than ingestion or prolonged contact with contaminated food.
The brand's record and disclosure
Function of Beauty markets customized personal care formulations and maintains a website presence but does not publicly disclose detailed ingredient sourcing, third-party certifications (e.g., EWG Verified, Leaping Bunny), or independent safety testing results. No major recalls or documented safety controversies involving this specific product or brand are recorded in FDA or CPSC databases. The brand's silence on PFAS sourcing is typical for the shampoo category but represents a gap in transparency rather than evidence of contamination.
How it compares in its category
Liquid shampoos are among the lowest-risk personal care formats because they avoid the talc contamination risk present in powders and the complex pigment chemistry of color cosmetics. Function of Beauty sits in the mid-market segment; it lacks third-party certifications (like Ecocert or COSMOS) that some premium or eco-focused competitors carry, but also avoids the formulation extremes (e.g., harsh sulfates or high preservative loads) more common in budget brands. Category-wide, shampoo hazards are minimal if preservative systems remain stable.
If you buy it
Store the bottle in a cool, dry location away from direct sunlight to preserve preservative efficacy and prevent microbial growth over 12-24 months of use. Avoid contact with eyes; rinse thoroughly with water if exposure occurs. If skin irritation develops (redness, itching), discontinue use and consult a dermatologist, as this may signal sensitivity to fragrance or preservative compounds. Replace if odor, separation, or discoloration occurs, which indicates preservative breakdown.
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 sensitizers
Function of Beauty Straight Hair Shampoo contains fragrance components; undisclosed fragrance blends are common in this brand's formulations. Contact dermatitis or respiratory irritation is possible in individuals with fragrance sensitivity, though incidence is low in the general population.
Preservative system stability and microbial growth
Aqueous shampoos require preservatives (e.g., phenoxyethanol, parabens, or alternatives) to prevent bacterial and fungal growth. No specific preservative failures or contamination events are recorded for this product; standard formulation practices minimize this risk.
1,4-dioxane (preservative byproduct)
Some shampoo preservative systems or emulsifiers can generate trace 1,4-dioxane as a manufacturing byproduct. Function of Beauty does not publicly disclose testing for this contaminant, and the brand's silent stance on ingredient purity leaves this uncertain.
Heavy metals in colorants or additives
Liquid shampoos typically contain minimal pigment; lead or cadmium contamination is not a recognized hazard class for this product type. Function of Beauty does not claim heavy-metal testing, but the category risk is low.
Eye and mucous membrane irritation from surfactants
Anionic surfactants (primary cleansing agents) can cause stinging if contact with eyes occurs; this is use-related, not a formulation defect. The product label should carry standard eye-contact warnings.
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.
Safer alternatives in Shampoo
Credo Beauty
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✓Verified PFAS-free by a third party
Puracy
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aqueous surfactant-based liquid shampoo
Lower-concern shampoo refill; Puracy's MADE SAFE cert and no-PFAS positioning align, but cosmetic formulation labs are rarely published.
✓Verified PFAS-free by a third party
Puracy
Natural Baby Shampoo Body Wash
water-based surfactants, plant-derived ingredients, aqueous solution
Lower PFAS concern, liquid cosmetic with no water-resistant or nonstick triggers.
⚠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.