Olaplex · Conditioner
No 5 Olaplex Bond Maintenance Conditioner
Lower PFAS concern; no typical vector, but no public testing or disclosure to confirm.
Olaplex No. 5 is a rinse-off hair conditioner with no inherent reason to contain PFAS, no waterproofing, stain resistance, or nonstick coating needed. The brand has not made PFAS claims or sought third-party verification.
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aqueous conditioner with silicones and bonding 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
No. 5 is a rinse-off aqueous conditioner containing silicones (for slip and shine), Olaplex's proprietary bis-aminopropyl diglycol dimaleate bonding polymer (claimed to repair hair structure), and standard conditioning emollients. The formula is water-based and designed to be removed after application, which limits skin absorption and systemic exposure compared to leave-on products. Silicones themselves are inert in cosmetic-grade formulations and do not bioaccumulate.
The brand's record and disclosure
Olaplex publishes ingredient lists and markets itself as a clean beauty brand, though it does not independently verify PFAS content or publish third-party safety testing. The brand has faced no major safety recalls or regulatory actions related to this product line. Transparency on sourcing and manufacturing is typical for prestige hair care but not exceptional; Olaplex does not disclose supply-chain audits or cosmetic impurity monitoring.
How it compares in its category
Olaplex No. 5 is a mid-to-premium conditioner; its safety profile is consistent with mainstream salon and drugstore silicone-based conditioners. It carries no known hazards that differentiate it negatively from competitors (Kerastase, Bumble and bumble, drugstore brands). The bonding polymer is proprietary but not flagged in regulatory literature as a concern; rinse-off format further reduces risk compared to leave-on treatments or styling products.
If you buy it
Use as a standard rinse-off conditioner: apply after shampooing, leave on for 1-3 minutes, rinse thoroughly. Do not ingest and avoid contact with eyes. Store in a cool, dry place away from direct sunlight to prevent packaging degradation. Replace every 6-12 months after opening or if consistency changes. If scalp irritation or allergic reaction occurs, discontinue and consult a dermatologist; do a patch test first if you have sensitive skin or known fragrance allergies.
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/fragrance allergens
No. 5 contains fragrance compounds (not fully disclosed by ingredient name); individual sensitization is possible but prevalence is low in rinse-off formats. Patch testing is recommended for those with fragrance allergies or sensitive scalp.
1,4-dioxane as cosmetic impurity
Dioxane can form as a trace byproduct in ethoxylated ingredients during manufacturing. No public testing or recalls of Olaplex No. 5 for dioxane are on record; risk is theoretical and typical of the product category unless specified otherwise by brand.
Heavy metals in colorants/preservatives
Olaplex does not use azo dyes or antimony-based colorants typical of textiles. Standard cosmetic-grade preservatives and UV absorbers carry minimal heavy-metal contamination risk if sourced from reputable suppliers, and no incidents are documented for this product.
Silicone bioaccumulation on scalp
Repeated use of silicone conditioners can build up on hair and scalp over time, potentially causing dullness or irritation in sensitive individuals. This is a cosmetic concern rather than a toxicological one; rotating products or periodic clarifying treatments mitigate it.
Formaldehyde releasers in preservatives
Modern conditioners typically avoid formaldehyde-releasing preservatives due to regulatory pressure and brand positioning. No evidence suggests Olaplex No. 5 uses imidazolidinyl urea or DMDM hydantoin; this hazard is not established for this product.
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.
More conditioner 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.