Olaplex No.4 Fine Bond Maintenance Shampoo
Low-medium risk. Rinse-off shampoo rarely needs PFAS but transparency is missing.
Olaplex No.4 is a rinse-off liquid shampoo without evidence of intentional PFAS use or waterproofing chemistry. The brand makes no PFAS disclosure either way, and no independent lab data or third-party certification is publicly available.
We flunk more products than we pass. This one earned its grade. How we grade
Material
aqueous liquid shampoo with surfactants
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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What Olaplex No.4 Fine Bond Maintenance Shampoo is made of, ingredients and materials
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.
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 (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.
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’s reassuring
Base material not linked to PFAS
The main material recorded for this product is not one associated with PFAS.
Formaldehyde / VOCs
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.
Source, ATSDR ↗Heavy metals
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.
Source, FDA ↗How is this PFAS grade calculated?
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.
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
- Olaplex 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.