75Excellent

Function of Beauty Review, Is Function of Beauty Non-Toxic?

The verdict
Function of Beauty averages 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Function of Beauty products graded as of October 2026, and all 8 reach its 70 point pass mark.
Free to quote with attribution to PFAS Authority and a link to pfasauthority.com/brands/function-of-beauty.

Function of Beauty grades Excellent on our four-band scale. On disclosure, the brand says nothing publicly about PFAS. See what every brand has published about PFAS for how that compares.

PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.

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  • polypropylene filter housing, carbon/sediment cartridge
  • We found no PFAS statement from the brand
  • Bacterial growth in spent cartridges

3 hazards checked on this product, all on its full breakdown.

  • RO membrane, carbon filters, stainless steel housing
  • We found no PFAS statement from the brand
  • Bacterial and microbial growth in housing and filters

4 hazards checked on this product, all on its full breakdown.

Avocado Vegan Mattress

Avocado

Vegan Mattress

100ExcellentPFAS grade
✓ MADE SAFE Certified✓ Global Organic Textile Standard (GOTS)
  • organic cotton, natural latex, coconut coir, recycled steel coils
  • The brand calls it PFAS-free, which we have not verified
  • Heavy metals

2 hazards checked on this product, all on its full breakdown.

Does Function of Beauty have PFAS, by category

Which Function of Beauty products are PFAS-free? Good or better, best-graded first

Function of Beauty Custom Wavy Hair Shampoo Base

Function of Beauty

Custom Wavy Hair Shampoo Base

75ExcellentPFAS grade
  • aqueous surfactant shampoo base; no treated coating or water-repellent coating applied
  • We found no PFAS statement from the brand
  • 1,4-dioxane (surfactant contaminant). Liquid shampoo bases often contain 1,4-dioxane as a byproduct of…

3 hazards checked on this product, all on its full breakdown.

Function of Beauty Curly Hair Shampoo Base with Chia Extract

Function of Beauty

Curly Hair Shampoo Base with Chia Extract

75ExcellentPFAS grade
  • Aqueous shampoo base with botanical extract (chia)
  • We found no PFAS statement from the brand
  • Fragrance allergens and sensitizers. Shampoos often contain fragrance blends (synthetic or essential oils)…

2 hazards checked on this product, all on its full breakdown.

Function of Beauty Clean Slate Clarifying Shampoo

Function of Beauty

Clean Slate Clarifying Shampoo

75ExcellentPFAS grade
  • aqueous shampoo formula (surfactants, water, polymers)
  • We found no PFAS statement from the brand
  • Fragrance allergens and sensitizers. Shampoo contains 'fragrance' listed as ingredient; this is a complex…

3 hazards checked on this product, all on its full breakdown.

Function of Beauty Custom Curly Hair Shampoo Base with Chia Extract

Function of Beauty

Custom Curly Hair Shampoo Base with Chia Extract

75ExcellentPFAS grade
  • Water-based liquid shampoo with chia seed extract
  • We found no PFAS statement from the brand
  • Fragrance allergens and undisclosed fragrance components. Shampoos marketed for curly hair often include…

2 hazards checked on this product, all on its full breakdown.

Function of Beauty Custom Shampoo

Function of Beauty

Custom Shampoo

75ExcellentPFAS grade
  • water-based liquid shampoo, proprietary formulation
  • We found no PFAS statement from the brand
  • Fragrance allergens and undisclosed fragrance chemicals. Shampoos commonly contain fragrance mixes; Function…

3 hazards checked on this product, all on its full breakdown.

  • aqueous solution (shampoo/conditioner); typical cosmetic surfactants, humectants, conditioning agents
  • We found no PFAS statement from the brand
  • Formaldehyde / VOCs. Rinse-off haircare frequently contains preservatives such as DMDM hydantoin…

3 hazards checked on this product, all on its full breakdown.

Function of Beauty Straight Hair Shampoo

Function of Beauty

Straight Hair Shampoo

75ExcellentPFAS grade
  • aqueous shampoo formulation; no protective coating or water-repellent coating treatment typical
  • We found no PFAS statement from the brand
  • Fragrance allergens and sensitizers. Function of Beauty Straight Hair Shampoo contains fragrance components…

3 hazards checked on this product, all on its full breakdown.

Function of Beauty Wavy Hair Shampoo

Function of Beauty

Wavy Hair Shampoo

75ExcellentPFAS grade
  • Water-based shampoo (typical surfactants, conditioning agents, preservatives)
  • We found no PFAS statement from the brand
  • Formaldehyde / VOCs. Water-based shampoos require antimicrobial preservatives; common options include sodium…

3 hazards checked on this product, all on its full breakdown.

What to buy instead Good or better, in the categories Function of Beauty sells

Aveeno Apple Cider Vinegar Shampoo

Aveeno

Apple Cider Vinegar Shampoo

75ExcellentPFAS grade
  • aqueous liquid shampoo (typical surfactants, conditioning agents, water)
  • We found no PFAS statement from the brand
  • Surfactant irritation (skin/eye contact)

3 hazards checked on this product, all on its full breakdown.

  • water-based shampoo/cream emulsion
  • We found no PFAS statement from the brand
  • Formaldehyde / VOCs

4 hazards checked on this product, all on its full breakdown.

Roz Salt Scalp Scrub

Roz

Salt Scalp Scrub

75ExcellentPFAS grade
✓ Credo Beauty certification
  • salt crystals, mineral-based scrub
  • We found no PFAS statement from the brand
  • Mechanical irritation from particle size

Function of Beauty and PFAS, common questions

Does Function of Beauty have PFAS?
Function of Beauty averages 75 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Function of Beauty products graded as of October 2026, and all 8 reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
Is Function of Beauty non-toxic?
Function of Beauty Custom Wavy Hair Shampoo Base is the highest-graded Function of Beauty product we have scored, at 75/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
Which Function of Beauty products are lower concern for PFAS?
The highest-graded Function of Beauty products we have scored are Function of Beauty Custom Wavy Hair Shampoo Base, Function of Beauty Curly Hair Shampoo Base with Chia Extract, Function of Beauty Clean Slate Clarifying Shampoo. That is our model-based estimate from materials and public disclosure, not a lab test.

Every grade uses the same public rubric. How grades work →