Function of Beauty · Shampoo
Function of Beauty Clean Slate Clarifying Shampoo
Lower concern for PFAS in this rinse-off cosmetic, but brand discloses nothing about intentional fluorochemicals.
Function of Beauty's shampoo is a rinse-off liquid cosmetic with no known waterproofing, grease-resistance, or nonstick coating, categories where PFAS are typically added. The brand makes no public statement about PFAS avoidance or presence. No third-party testing or recalls are publicly documented.
Shop Function of Beauty on Amazon →Material
aqueous shampoo formula (surfactants, water, polymers)
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
Clean Slate is an aqueous shampoo formulation containing surfactants (cleansing agents), water, conditioning polymers, and fragrance. This product is designed to be rinsed away completely, which means dermal and ingestion exposure windows are extremely short and limited. The aqueous base and rinse-off nature eliminate concerns typical of leave-on products like lotions or makeup.
The brand's record and disclosure
Function of Beauty is a customizable personal care brand focused on DTC marketing and personalization. The brand does not publicly disclose ingredient sourcing, supply chain audits, or PFAS/fluorochemical policies, making full transparency assessment difficult. No established product recalls, safety warnings, or regulatory actions are on record for this shampoo line. The brand does not carry third-party certifications like EWG, Leaping Bunny, or Clean Beauty standards.
How it compares in its category
Most mainstream clarifying shampoos use similar surfactant blends and polymers; Clean Slate is unremarkable in formulation risk profile. Compared to premium salon brands, it offers no additional safety certifications or transparency. Compared to budget drugstore alternatives, it occupies a mid-market position with no clear safety advantage or disadvantage based on available public information.
If you buy it
Use as directed: apply to wet hair, lather, rinse thoroughly with clean water. No special handling or heat precautions are needed since this product is not applied to skin long-term or heated. Store in a cool, dry place to prevent mold growth in the bottle. Discontinue if any irritation (redness, itching, scaling) occurs; rinse eyes immediately if product contacts them.
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
Shampoo contains 'fragrance' listed as ingredient; this is a complex mixture often undisclosed on labels. Some individuals may experience contact dermatitis, scalp irritation, or respiratory sensitivity, especially with repeated use or on compromised skin barrier.
Preservative allergens (formaldehyde-releasers)
No formaldehyde or formaldehyde-releaser preservatives are listed in publicly available ingredient disclosures for this product. Standard cosmetic preservatives used (if present) are not flagged as hazardous at rinse-off concentrations.
Polymers and conditioning agent buildup
Clarifying shampoos often contain silicones or synthetic polymers that can accumulate on hair and scalp with repeated use. This is cosmetic rather than safety-critical but may require periodic deep cleansing or product rotation to avoid product fatigue.
Heavy metals in colorants or mineral content
No known recalls or regulatory warnings exist for lead, cadmium, or arsenic contamination in this product. Shampoos are lower risk for heavy metal accumulation than pigmented cosmetics because of rinse-off nature and lower dwell time.
Sulfate sensitivity in sensitive scalps
This is a clarifying shampoo likely formulated with anionic surfactants (sulfates) for deep cleansing. Individuals with eczema, psoriasis, or chemically treated hair may experience irritation; sulfate-free alternatives exist for these populations.
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
Roz Salt Scalp Scrub
salt crystals, mineral-based scrub
Lower-concern buy, salt scrub formulation carries minimal inherent PFAS risk.
✓Verified PFAS-free by a third party
Puracy
Public Goods Shampoo Refill
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.