Olaplex · Shampoo
Olaplex No.4 Fine Bond Maintenance Shampoo
Lower concern for typical use; shampoo formulations rarely require PFAS, but transparency is absent.
Olaplex No.4 is a rinse-off liquid shampoo with no public evidence of intentional PFAS addition or water-repellent coating/waterproofing chemistry. The brand makes no PFAS disclosure either way. No independent lab data or third-party certification is publicly available.
Shop Olaplex on Amazon →Material
aqueous liquid shampoo with surfactants
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
Olaplex No.4 is an aqueous liquid shampoo formulated with surfactants, conditioning agents, and the brand's proprietary bis-aminopropyl diglycol dimaleate (their claimed 'bond-building' active). The aqueous base and typical surfactant package (anionic and amphoteric types) are standard, low-hazard cosmetic ingredients at the concentrations used in rinse-off products. No unusual chemistry here; the product is designed to be diluted with water during use and fully rinsed away.
The brand's record and disclosure
Olaplex has not published detailed ingredient safety data or third-party certifications (e.g., no EWG Verified, no Clean Beauty accreditation noted). The brand does not publicly disclose PFAS testing or stance, which is a transparency gap in an era when many personal care makers are moving toward PFAS-free formulations. No major safety recalls or regulatory actions against this specific product are on record. The brand has faced criticism for marketing claims, but not product safety issues.
How it compares in its category
Shampoos are typically lower-hazard personal care products because they are rinse-off, not leave-on, and the exposure window is brief. Olaplex No.4 sits in the premium mass-market segment; comparable products from brands like SheaMoisture, Bumble and bumble, or Kérastase carry similar ingredient profiles. Lack of certified organic or EWG-Verified status is common in this price tier; most conventional shampoos do not carry third-party safety audits.
If you buy it
Use as directed on the label: apply to wet hair, lather, rinse thoroughly with water. No unusual precautions needed. Discontinue use if scalp irritation or allergic reaction occurs (rare with rinse-off shampoos). Store away from extreme heat or direct sunlight to preserve formula integrity. A standard 250-400 mL bottle lasts 2-3 months with typical use; replace when empty or if separation or odor changes occur.
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)
Olaplex No.4 contains fragrance listed as a catch-all ingredient; specific allergens (e.g., limonene, linalool) are not itemized on packaging. Individuals with sensitive skin or fragrance sensitivities may experience contact dermatitis, though incidence is low for rinse-off shampoos.
1,4-dioxane (potential contaminant)
This shampoo likely contains ethoxylated surfactants (common in rinse-off formulas), which can contain trace 1,4-dioxane as a manufacturing byproduct. No published testing of this specific product is available; regulatory limits allow trace amounts in cosmetics. Risk is minimal given brief contact and rinse-off nature.
Formaldehyde releasers (unlikely)
No publicly available information suggests this product uses formaldehyde-releasing preservatives (e.g., imidazolidinyl urea). Modern premium shampoos typically use newer preservative systems; this appears to follow that pattern.
Heavy metals in colorants (none documented)
The product is a clear or light-colored liquid shampoo with no reported use of synthetic dyes or pigments that would introduce lead, cadmium, or chromium. No safety alerts or testing reports indicate contamination.
Eye irritation (typical product hazard)
Like all shampoos, accidental contact with eyes can cause mild irritation due to surfactant action. This is a use-related hazard, not a formulation defect; rinse immediately with water if contact occurs.
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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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.