Find products and ingredients Learn how Skin Deep® works Meet our experts Discover EWG VERIFIED®
Product score: 06

Data Availability:

Limited

R+CO DALLAS Biotin Thickening Treatment

R+CO DALLAS Biotin Thickening Treatment

WHERE TO BUY

When you make a purchase through retailer links on our site, we may earn commission through affiliate programs. All affiliate fees EWG receives support our nonprofit mission. Learn more here

CATEGORY

Hair Treatment/Serum
Hair Styling Aid

BRAND

R+Co

DATA LAST UPDATED

November 2024

Ingredient concerns

See how this product scores for common concerns.

  • MODERATE
    Cancer
  • HIGH
    Allergies & Immunotoxicity
  • LOW
    Developmental and Reproductive Toxicity
  • HIGH
    Use Restrictions

Ingredient scores

Ingredients are scored based on their formulation and concentration in this product. Click on an ingredient for more information.

Ingredient score: 01
WATER
Data Availability: Robust
Expand content Collapse content
FUNCTION(S) solvent
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 03
DISTEAROYLETHYL DIMONIUM CHLORIDE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antistatic, hair conditioning, antistatic agent, hair conditioning agent
CONCERNS • Allergies/immunotoxicity (moderate)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Non-reproductive organ system toxicity (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
AMODIMETHICONE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning agent
CONCERNS • Contamination concerns (CYCLOPENTASILOXANE and CYCLOTETRASILOXANE)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
STEARYL ALCOHOL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) emollient, emulsifying, emulsion stabilising, foam boosting, masking, opacifying, refatting, surfactant, viscosity controlling, emulsion stabilizer, fragrance ingredient, surfactant - emulsifying agent, surfactant - foambooster, viscosity increasing agent - aqueous, viscosity increasing agent - nonaqueous
CONCERNS • Irritation (skin, eyes, or lungs) (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CETEARYL ALCOHOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emollient, emulsifying, emulsion stabilising, foam boosting, opacifying, surfactant, viscosity controlling, emulsion stabilizer, opacifying agent, surfactant - foam booster, viscosity increasingagent - aqueous, viscosity increasing agent - nonaqueous
CONCERNS • Allergies/immunotoxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HYDROXYPROPYL STARCH PHOSPHATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) bulking, viscosity controlling, bulking agent, viscosity increasing agent - aqueous
CONCERNS • Non-reproductive organ system toxicity (low)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 06
BEHENTRIMONIUM CHLORIDE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antistatic, hair conditioning, preservative, antistatic agent, hair conditioning agent
CONCERNS • Allergies/immunotoxicity (moderate)
• Use restrictions (high)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
Bis-Ethyl(isostearylimidazoline) Isostearamide
Data Availability: None
Expand content Collapse content
Ingredient score: 01
PPG-3 BENZYL ETHER ETHYLHEXANOATE
Data Availability: None
Expand content Collapse content
Ingredient score: 01
BUTYROSPERMUM PARKII (SHEA) BUTTER
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) skin conditioning, viscosity controlling, skin-conditioning agent - miscellaneous, skin-conditioning agent - occlusive, viscosityincreasing agent - nonaqueous
CONCERNS • Allergies/immunotoxicity (low)
• Use restrictions (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HYDROGENATED CASTOR OIL/ SEBACIC ACID COPOLYMER
Data Availability: None
Expand content Collapse content
FUNCTION(S) emollient, hair conditioning, skin conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
BUTYLENE GLYCOL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) humectant, masking, skin conditioning, solvent, viscosity controlling, fragrance ingredient, skin-conditioning agent - miscellaneous, viscositydecreasing agent
CONCERNS • Irritation (skin, eyes, or lungs) (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HELIANTHUS ANNUUS (SUNFLOWER) SEED OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) emollient, skin-conditioning agent - miscellaneous, skin-conditioning agent - occlusive
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
PHENOXYETHANOL
Data Availability: Good
Expand content Collapse content
FUNCTION(S) preservative, fragrance ingredient
CONCERNS • Allergies/immunotoxicity (low)
• Use restrictions (moderate)
• Non-reproductive organ system toxicity (moderate)
• Ecotoxicology (low)
• Irritation (skin, eyes, or lungs) (high)
• Occupational hazards (high)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
COCOS NUCIFERA (COCONUT) OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) emollient, hair conditioning, masking, skin conditioning, solvent, fragrance ingredient, hair conditioning agent, skin-conditioning agent - miscellaneous;skin-conditioning agent - occlusive
CONCERNS • Allergies/immunotoxicity (low)
• Multiple, additive exposure sources (low)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
ISOPROPYL ALCOHOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antifoaming, perfuming, solvent, viscosity controlling, antifoaming agent, fragrance ingredient, viscosity decreasing agent
CONCERNS • Allergies/immunotoxicity (low)
• Enhanced skin absorption
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (high)
• Occupational hazards (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CAPRYLYL GLYCOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emollient, hair conditioning, humectant, skin conditioning, hair conditioning agent, skin-conditioning agent - emollient
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 06
CETRIMONIUM CHLORIDE
Data Availability: Good
Expand content Collapse content
FUNCTION(S) antimicrobial, antistatic, emulsifying, preservative, surfactant, antistatic agent, cosmetic biocide, surfactant - emulsifying agent
CONCERNS • Allergies/immunotoxicity (moderate)
• Use restrictions (high)
• Neurotoxicity (low)
• Endocrine disruption (low)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
TRIDECETH-10
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) surfactant - emulsifying agent
CONCERNS • Use restrictions (low)
• Non-reproductive organ system toxicity (moderate)
• Irritation (skin, eyes, or lungs) (low)
• Contamination concerns (ETHYLENE OXIDE and 1,4-DIOXANE)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
QUATERNIUM-95
Data Availability: None
Expand content Collapse content
Ingredient score: 02
POTASSIUM SORBATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) preservative, fragrance ingredient
CONCERNS • Allergies/immunotoxicity (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HEXYLENE GLYCOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emulsifying, perfuming, skin conditioning, solvent, surfactant, fragrance ingredient, viscosity decreasing agent
CONCERNS • Allergies/immunotoxicity (low)
• Irritation (skin, eyes, or lungs) (high)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
PANTHENOL
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antistatic, hair conditioning, skin conditioning, hair conditioning agent
CONCERNS • Multiple, additive exposure sources (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
PROPANEDIOL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) solvent, viscosity controlling, viscosity decreasing agent
CONCERNS • Cancer (low)
• Developmental/reproductive toxicity (low)
• Enhanced skin absorption
• Endocrine disruption (low)
• Irritation (skin, eyes, or lungs) (high)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
HYDROLYZED RICE PROTEIN
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antistatic, hair conditioning, skin conditioning, hair conditioning agent, skin-conditioning agent - miscellaneous
CONCERNS • Contamination concerns (PESTICIDES)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
BIOTIN
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antiseborrhoeic, hair conditioning, skin conditioning, hair conditioning agent, skin-conditioning agent - miscellaneous
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
PPG-26-BUTETH-26
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) hair conditioning, skin conditioning, fragrance ingredient, hair conditioning agent, skin-conditioning agent - miscellaneous;surfactant - emulsifying agent
CONCERNS • Use restrictions (low)
• Non-reproductive organ system toxicity (moderate)
• Multiple, additive exposure sources (low)
• Irritation (skin, eyes, or lungs) (low)
• Contamination concerns (BUTYL ALCOHOL)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
PEG-40 HYDROGENATED CASTOR OIL
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) perfuming, fragrance ingredient, surfactant - emulsifying agent, surfactant - solubilizing agent
CONCERNS • Use restrictions (low)
• Contamination concerns (ETHYLENE OXIDE and 1,4-DIOXANE)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 06
OCIMUM BASILICUM (SWEET BASIL) EXTRACT
Data Availability: Robust
Expand content Collapse content
FUNCTION(S) perfuming, fragrance ingredient, skin-conditioning agent - miscellaneous
CONCERNS • Cancer (moderate)
• Developmental/reproductive toxicity (low)
• Allergies/immunotoxicity (high)
• Non-reproductive organ system toxicity (moderate)
• Multiple, additive exposure sources (low)
• Ecotoxicology (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CITRIC ACID
Data Availability: Good
Expand content Collapse content
FUNCTION(S) buffering, chelating, masking, chelating agent, fragrance ingredient, ph adjuster
CONCERNS • Use restrictions (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
TETRASODIUM EDTA
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) chelating, chelating agent
CONCERNS • Enhanced skin absorption
• Non-reproductive organ system toxicity (moderate)
• Ecotoxicology (low)
• Irritation (skin, eyes, or lungs) (high)
• Occupational hazards (high)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
CHENOPODIUM QUINOA SEED EXTRACT
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) skin conditioning, skin-conditioning agent - miscellaneous
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
DAUCUS CAROTA SATIVA (CARROT) ROOT EXTRACT
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) perfuming, not reported
CONCERNS • Allergies/immunotoxicity (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
GLYCINE MAX SEED EXTRACT
Data Availability: Limited
Expand content Collapse content
CONCERNS • Allergies/immunotoxicity (low)
• Endocrine disruption (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
ORYZA SATIVA (RICE) EXTRACT
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) emollient, hair conditioning agent, skin-conditioning agent - miscellaneous
CONCERNS • Contamination concerns (PESTICIDES)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
PANAX GINSENG (GINSENG) ROOT EXTRACT
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) emollient, hair conditioning, skin protecting, tonic, skin-conditioning agent - miscellaneous
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
APIGENIN
Data Availability: Fair
Expand content Collapse content
Ingredient score: 02
TETRADIBUTYL PENTAERITHRITYL HYDROXYHYDROCINNAMATE
Data Availability: Limited
Expand content Collapse content
FUNCTION(S) antioxidant
CONCERNS • Cancer (low)
• Developmental/reproductive toxicity (low)
• Persistence and bioaccumulation (high)
• Non-reproductive organ system toxicity (low)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
OLEANOLIC ACID
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) skin conditioning, skin-conditioning agent - miscellaneous
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 01
BIOTINOYL TRIPEPTIDE-1
Data Availability: None
Expand content Collapse content
FUNCTION(S) hair conditioning
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 02
LACTIC ACID
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) buffering, humectant, skin conditioning, exfoliant, fragrance ingredient, ph adjuster, skin-conditioning agent -humectant, skin-conditioning agent - miscellaneous
CONCERNS • Cancer (low)
• Developmental/reproductive toxicity (low)
• Enhanced skin absorption
• Use restrictions (high)
• Irritation (skin, eyes, or lungs) (low)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 08
FRAGRANCE
Data Availability: Fair
Expand content Collapse content
FUNCTION(S) deodorant, masking, perfuming
CONCERNS • Allergies/immunotoxicity (high)
• Endocrine disruption (moderate)
• Non-reproductive organ system toxicity (moderate)
• Ecotoxicology (low)
• Irritation (skin, eyes, or lungs) (moderate)
LEARN MORE ABOUT THIS INGREDIENT
Ingredient score: 04
LIMONENE
Data Availability: Good
Expand content Collapse content
FUNCTION(S) perfuming
CONCERNS • Allergies/immunotoxicity (high)
• Persistence and bioaccumulation (moderate)
• Ecotoxicology (low)
• Irritation (skin, eyes, or lungs) (high)
• Contamination concerns (FORMALDEHYDE)
LEARN MORE ABOUT THIS INGREDIENT

Ingredients from packaging:

Water (Aqua/Eau), Distearoylethyl Dimonium Chloride, Amodimethicone, Stearyl Alcohol, Cetearyl Alcohol, Hydroxypropyl Starch Phosphate, Behentrimonium Chloride, Bis-Ethyl(isostearylimidazoline) Isostearamide, PPG-3 Benzyl Ether Ethylhexanoate, Butyrospermum Parkii (Shea) Butter, Hydrogenated Castor Oil/Sebacic Acid Copolymer, Butylene Glycol, Helianthus Annuus (Sunflower) Seed Oil, Phenoxyethanol, Cocos Nucifera (Coconut) Oil, Isopropyl Alcohol, Caprylyl Glycol, Cetrimonium Chloride, Trideceth-10, Quaternium-95, Potassium Sorbate, Hexylene Glycol, Panthenol, Propanediol, Hydrolyzed Rice Protein, Biotin, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Ocimum Basilicum Hairy Root Culture Extract, Citric Acid, Tetrasodium EDTA, Chenopodium Quinoa Seed Extract, Daucus Carota Sativa (Carrot) Root Extract, Glycine Max (Soybean) Seed Extract, Oryza Sativa (Rice) Extract, Panax Ginseng Root Extract, Apigenin, Pentaerythrityl Tetra-Di-T-Butyl Hydroxyhydrocinnamate, Oleanolic Acid, Biotinoyl Tripeptide-1, Lactic Acid, Fragrance (Parfum), Limonene

Product's animal testing policies

Some cosmetics companies have taken People for the Ethical Treatment of Animals and Leaping Bunny animal-testing pledges. For consumers who are concerned about companies’ policies on animal testing, Skin Deep reports this information.


Unknown

Leading international certifiers PETA and Leaping Bunny have no information concerning this company’s use of animal testing.

Understanding scores

Cosmetics and personal care products are not required to be tested for safety before being allowed on the market. The Skin Deep® scoring system was designed to help the public understand whether a product is safe to use or whether it contains ingredients of concern.

Every product and ingredient in Skin Deep gets a two-part score – one for hazard and one for data availability. The safest products score well by both measures, with a low hazard rating and a fair or better data availability rating.


HOW WE DETERMINE SCORES

Hazard score

The Skin Deep ingredient hazard score, from 1 to 10, reflects known and suspected hazards linked to the ingredients. The EWG Verified® mark means a product meets EWG’s strictest criteria for transparency and health.

Score legend

Data availability

The Skin Deep data availability rating reflects the number of scientific studies about the product or ingredient in the published scientific literature.

NONE LIMITED FAIR GOOD ROBUST
Low Availability
Moderate Availability
High Availability

More hair treatment/serum

VIEW ALL hair treatment/serum
Skindeep Healthy Living App

EWG research
on the go

Find personal care, cleaning, and food products on the EWG Healthy Living app.

DOWNLOAD THE APP