Dallas Biotin Thickening Treatment
The R & Co Dallas Biotin Thickening Treatment is a misc. Our analysis of its 43 ingredients (31 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
The R & Co Dallas Biotin Thickening Treatment is a misc. Our analysis of its 43 ingredients (31 low-risk) rates it Excellent (96/100). Based on its ingredients, it looks well-suited to dry skin. Heads up: it contains fragrance, which can irritate sensitive or reactive skin.
Summarised from our ingredient analysis — not brand marketing copy.
The evidence
| EWG | CIR | Ingredient Name & Cosmetic Functions | Notes |
|---|---|---|---|
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Water
(Solvent) |
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Distearoylethyl Dimonium Chloride
(Antistatic Agent, Hair Conditioning) |
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Amodimethicone
(Antistatic Agent, Hair Conditioning) |
Silicone
|
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Stearyl Alcohol
(Emulsion Stabilising, Fragrance, Emulsifying, Surfactant, Foambooster, Viscosity Increasing Agent, Emollient, Foam Boosting, Masking, Opacifying, Refatting, Viscosity Controlling) |
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Cetearyl Alcohol
(Emulsion Stabilising, Opacifying, Foam Boosting, Viscosity Increasingagent Aqueous, Viscosity Increasing Agent, Emollient, Emulsifying, Viscosity Controlling) |
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Hydroxypropyl Starch Phosphate
(Bulking Agent, Viscosity Increasing Agent, Viscosity Controlling) |
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Behentrimonium Chloride
(Antistatic Agent, Hair Conditioning, Preservative) |
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Isostearyl Ethylimidazolinium Ethosulfate
(Antistatic Agent, Hair Conditioning) |
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PPG-3 Benzyl Ether Ethylhexanoate
(Emollient, Hair Conditioning, Plasticizer) |
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Butyrospermum Parkii Butter
(Skin Conditioning, Viscosity Controlling) |
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Hydrogenated Castor Oil/Sebacic Acid Copolymer
(Emollient, Hair Conditioning, Skin Conditioning) |
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Butylene Glycol
(Fragrance, Skin Conditioning, Solvent, Viscositydecreasing Agent, Humectant, Masking, Viscosity Controlling) |
Good for Dry Skin
|
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Helianthus Annuus Seed Oil
(Fragrance, Skin Conditioning, Skin Conditioning Emollient) |
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Phenoxyethanol
(Fragrance, Preservative) |
Paraben
|
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cocos nucifera oil
(Fragrance, Hair Conditioning, Perfuming, Skin Conditioning) |
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Isopropyl Alcohol
(Antifoaming Agent, Fragrance, Solvent, Viscosity Decreasing Agent, Perfuming, Viscosity Controlling) |
Bad for Sensitive Skin
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Caprylyl Glycol
(Hair Conditioning, Skin Conditioning, Emollient, Humectant) |
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Cetrimonium Chloride
(Antistatic Agent, Cosmetic Biocide, Emulsifying, Surfactant, Antimicrobial, Preservative) |
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Trideceth-10
(Emulsifying, Surfactant) |
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Quaternium-95
(Hair Conditioning, Uv Absorber) |
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Potassium Sorbate
(Fragrance, Preservative) |
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Hexylene Glycol
(Fragrance, Solvent, Viscosity Decreasing Agent, Emulsifying, Perfuming, Skin Conditioning, Surfactant) |
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Panthenol
(Antistatic Agent, Hair Conditioning, Skin Conditioning) |
Good for Dry Skin
|
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Propanediol
(Solvent, Viscosity Decreasing Agent, Viscosity Controlling) |
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Hydrolyzed Rice Protein
(Hair Conditioning, Skin Conditioning, Antistatic Agent) |
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Biotin
(Hair Conditioning, Skin Conditioning, Antiseborrhoeic) |
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PPG-26-Buteth-26
(Fragrance, Hair Conditioning, Skin Conditioning, Emulsifying, Surfactant) |
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PEG-40 Hydrogenated Castor Oil
(Fragrance, Emulsifying, Surfactant, Perfuming) |
Fungal Acne Trigger
|
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Ocimum Basilicum Hairy Root Culture Extract
(Skin Conditioning) |
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Citric Acid
(Chelating Agent, Fragrance, Ph Adjuster, Buffering Agent, Masking) |
Bad for Sensitive Skin
|
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Tetrasodium EDTA
(Chelating Agent) |
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Chenopodium Quinoa Seed Extract
(Skin Conditioning) |
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daucus carota sativa root extract
(Skin Conditioning) |
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Glycine Max Seed Extract
(Hair Conditioning, Skin Conditioning, Skin Protecting) |
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Oryza sativa extract
(Abrasive, Absorbent, Bulking, Hair Conditioning, Skin Conditioning) |
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Panax Ginseng Root Extract
(Emollient, Hair Conditioning, Skin Protecting, Tonic) |
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Apigenin
(Antioxidant, Hair Conditioning) |
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Pentaerythrityl Tetra-di-t-butyl Hydroxyhydrocinnamate
(Antioxidant) |
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Oleanolic Acid
(Skin Conditioning) |
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Biotinoyl Tripeptide-1
(Hair Conditioning) |
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Lactic Acid
(Exfoliant, Fragrance, Humectant, Ph Adjuster, Skin Conditioning Agent Humectant, Skin Conditioning, Buffering Agent) |
Bad for Sensitive Skin
|
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PARFUM
(Fragrance, Perfuming) |
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Limonene
(Deodorant, Perfuming, Solvent) |
Allergens
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How to use
General guidance from this product's category and active ingredients — always follow the directions on the package.
Trust & honesty
The concentrations these actives are typically effective at in research — not a measurement of this product.
OTC leave-on AHAs are usually 5–10%. The effect also depends on pH and free-acid value, not the percentage alone.
Lactic Acid
INCI lists don't disclose amounts, and we don't claim to know this product's levels — these are the ranges these ingredients are usually effective at, so you can tell a real formula from "fairy-dusting" a marketed active. How we estimate this.
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