Function of Beauty Clean Slate Clarifying Shampoo
Lower concern for PFAS in this rinse-off cosmetic, but brand discloses nothing about intentional fluorochemicals.
This rinse-off liquid cosmetic has no known waterproofing, grease-resistance, or nonstick coating where PFAS are typically added. The brand makes no public statement about PFAS. No third-party testing or recalls are publicly documented.
We flunk more products than we pass. This one earned its grade. How we grade
Material
aqueous shampoo formula (surfactants, water, polymers)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Function of Beauty Clean Slate Shampoo is made of, ingredients and materials
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.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
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.
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.
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’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
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.
Source, ATSDR ↗Heavy metals
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.
Source, FDA ↗How is this PFAS grade calculated?
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.
What is not known about PFAS in this product?
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Function of Beauty has made none
Formulations change between production runs, so check the current label. How we grade.
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.