Redken Extreme Length Shampoo
Lower concern for a rinse-off shampoo with no known PFAS triggers.
This rinse-off liquid shampoo contains no Teflon-family coating coatings or water-repellent finishes typical of PFAS products. Redken provides no PFAS status information, and public ingredient data for this formula is unavailable.
We flunk more products than we pass. This one earned its grade. How we grade
Material
Aqueous liquid shampoo formulation (water, surfactants, conditioning agents)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
What’s concerning
No PFAS disclosure
The company has not publicly discussed PFAS in this product.
Category baseline
cosmetics is a category where PFAS exposure is more common.
Fragrance allergens
Redken Extreme Length contains fragrance components listed as 'fragrance' (proprietary blend) and reported to include limonene and linalool in some formulations. These are common contact sensitizers in scalp-sensitive individuals but do not pose systemic toxicity in rinse-off use; allergic contact dermatitis is the primary concern.
Preservative-related irritation or sensitization
Typical rinse-off shampoos use methylchloroisothiazolinone (MCI) or methylisothiazolinone (MIT) as preservatives; these are known scalp irritants in susceptible users. No formulation-specific data is publicly available for this product, but the category standard poses low but real risk of sensitization with repeated use.
Silicone buildup on scalp
Redken Extreme Length contains silicones (dimethicone and related polymers) for conditioning. In rinse-off shampoo, bulk rinses away, but repeated use may cause gradual silicone deposition on scalp and hair shaft, leading to dullness, itching, or scalp irritation in sensitive individuals. Not a toxicity hazard but a practical concern for long-term comfort.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
1,4-dioxane contamination
1,4-dioxane is a manufacturing byproduct in some surfactant synthesis; it is not an intentional ingredient. No published testing or recall data exists for this product; if present, rinse-off exposure is minimal. FDA monitoring suggests levels in rinse-off cosmetics are typically below concern thresholds, but brand does not disclose testing.
Heavy metals
Clear or translucent shampoos typically use minimal synthetic colorants. No lead, cadmium, or other heavy metal contaminants are on record for Redken Extreme Length or similar professional shampoos; regulatory oversight of cosmetic colorants in the US (though limited) has not flagged this product class.
Source: FDA ↗The full breakdown
What it's made of and why it matters
Redken Extreme Length Shampoo is an aqueous liquid formulation based on water, anionic and amphoteric surfactants (cleaning agents), silicones, and conditioning polymers designed to reduce breakage and add slip. The rinse-off nature of shampoo means most ingredients wash away and do not remain on skin or in the body. Surfactants in rinse-off products pose negligible dermal absorption risk compared to leave-on cosmetics; the primary concern in shampoos is scalp irritation from surfactant concentration, not systemic toxicity.
The brand's record and disclosure
Redken is owned by L'Oreal, which has made public commitments to remove certain flagged chemicals (e.g., some flame retardants, formaldehyde releasers) but maintains a selective transparency stance rather than full ingredient disclosure advocacy. No major recalls or formal safety violations are on record for this specific product. The brand does not independently publicize PFAS testing or PFAS-free claims, leaving PFAS status presumed but unverified.
How it compares in its category
Redken Extreme Length sits in the mainstream professional/salon shampoo segment. It is comparable in formulation type to other rinse-off shampoos from brands like Tresemmé, Pantene, and Garnier, all of which use similar surfactant and silicone bases. No distinctive hazard profile separates it from category peers; category-wide concern in shampoos centers on scalp irritation potential and allergenic fragrance or preservatives, not systemic chemical toxicity from brief rinse-off contact.
If you buy it
Use as directed: apply to wet hair, lather, and rinse thoroughly within seconds to minutes. Avoid contact with eyes; rinse immediately if contact occurs. Store in a cool, dry place away from direct sunlight to preserve preservative efficacy. If scalp irritation, itching, or redness develops after repeated use, discontinue and test a simpler formulation to identify a potential fragrance or preservative trigger.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Redken has made none
Formulations change between production runs, so check the current label. How we grade.
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Puracy
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Lower concern for a MADE SAFE certified shampoo avoiding fluorinated ingredients.
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Puracy
Natural Shampoo
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Limited concern
Lower concern for a liquid shampoo with minimal PFAS risk in this category.
⚠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.