Redken Acidic Bonding Concentrate Leave-In Treatment
Evidence-led ingredient analysis, a transparent clean score out of 100 and cleaner, effective alternatives at three price levels.
Redken
Acidic Bonding Concentrate Leave-In Treatment
Hair Care · Budget: £24.50
4.6 (14,300 reviews)· across LookFantastic, Boots, Amazon UK, Cult Beauty, Sephora UK
Ingredients: AI-inferred — not yet verified
An effective acidic leave-in treatment for damaged hair restoration. Note: The ingredient list was inferred based on Redken's standard UK market formulation for this product. The formula relies on citric acid for bond reinforcement alongside synthetic silicones and quaternary conditioning agents. Main considerations include undisclosed fragrance, multiple listed fragrance allergens, and ethoxylated surfactants with minor manufacturing contamination risks.
Hazard categories
Estimated score out of 100
Formulation score is fixed across Selenssa · Community effectiveness awaiting more reports
Based on publicly available ingredients, following our methodology. Not medical advice — always check the physical label, especially for allergies. How we score →
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A performant choice for heavily processed or damaged hair where bond repair and cuticle sealing are prioritised. If you have a history of fragrance contact allergies or prefer silicone-free formulas, consider cleaner, allergen-reduced bond alternatives.
Be cautious if
Individuals with contact allergies to fragrance components (limonene, linalool, hexyl cinnamal) or sensitive scalps.
Against your clean standard
Conditionally compliant — safe under current cosmetics regulations, but contains undisclosed synthetic fragrance, multiple fragrance allergens, and persistent silicones.
Where this score comes from
- Source
- No source record on file yet
- Source page
- —
- Retrieved
- —
- Evidence snapshot
- Not captured
Score history
No score changes have been recorded for this product yet.
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Does Redken Acidic Bonding Concentrate Leave-In Treatment contain parabens, sulfates or fragrance?
A straight yes or no for the ingredient groups people most often want to avoid, checked against this product's published formulation.
Free from parabens
Preservatives; the longer-chain ones (propyl, butyl) carry the endocrine questions.
Free from sulfates (sls / sles)
Strong cleansing agents that can strip a compromised barrier.
Contains silicones
Found: dimethicone, amodimethicone. Slip and occlusion; cyclic silicones (D4/D5/D6) are the environmentally restricted ones.
Contains fragrance / parfum
Found: parfum / fragrance. Undisclosed fragrance blends are the most common trigger for sensitised skin.
Contains essential oils
Found: limonene, linalool. Naturally derived, but among the most frequently reported contact allergens.
Contains drying alcohol
Found: phenoxyethanol. Fine in small amounts for texture; high up the list it can dehydrate.
Free from formaldehyde releasers
Preservatives that slowly release formaldehyde.
Free from chemical uv filters of concern
Restricted or debated filters with endocrine or reef-persistence questions.
Is Redken Acidic Bonding Concentrate Leave-In Treatment non-comedogenic?
This formulation contains 1 ingredient commonly associated with clogged pores — cetearyl alcohol. That does not make it unsuitable for everyone: comedogenicity depends on concentration, the rest of the formula and your own skin. If you are acne-prone, patch test or choose one of the alternatives below.
Is Redken Acidic Bonding Concentrate Leave-In Treatment safe for sensitive skin?
Usually tolerated, but patch test if your skin reacts easily.
- Contains fragrance or parfum
- Contains essential oils or common fragrance allergens
- Contains a drying alcohol
Ingredients worth knowing about: Parfum / Fragrance, Limonene, Linalool, Hexyl Cinnamal.
Redken Acidic Bonding Concentrate Leave-In Treatment full ingredients list
11 ingredients analysed, in the order Selenssa assessed them. Concentration generally falls as you move down the list.
Aqua / Water / Eau, Dimethicone, Cetearyl Alcohol, Amodimethicone, Citric Acid, Phenoxyethanol, Parfum / Fragrance, Steareth-20, Limonene, Linalool, Hexyl Cinnamal.
The actives doing the work: Citric Acid (Helps seal the hair cuticle, optimize pH balance, and support broken structural bonds in compromised hair fibers.); Cetearyl Alcohol (Provides soft emolliency and improves hair manageable without stripping moisture.).
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