EWG Skin Deep® | What is NYLON-66

HOW WE DETERMINE SCORES Learn more About EWG VERIFIED®

Data: Limited

Nylon 66

IMAGE SOURCE: PubChem

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Other Concerns

Use restrictions (low) and Non-reproductive organ system toxicity (moderate)

SYNONYMS

● NYLON POWDER

● NYLON-66

● POLY[IMINO(1,6-DIOXO-1,6-HEXANEDIYL)IMINO-1,6-HEXANEDIYL]

● POLY[IMINO(1,6DIOXO1,6HEXANEDIYL)IMINO1,6HEXANEDIYL]

● ULTRAMID A3 .TIMES. G7

This ingredient is not currently on EWG's Skin Deep Restricted or Unacceptable Lists.

Nylon-66 is a polyamide formed by the reaction of adipic acid with hexylenediamine.

Common concerns

See how this product scores for common concerns.

LOW

Cancer
LOW

Allergies & Immunotoxicity
LOW

Developmental and Reproductive Toxicity
LOW

Use Restrictions

Ingredient concerns

CONCERNS
DATA SOURCES

Products with this Ingredient

brow liner	16 products
mascara	10 products
around-eye cream	1 products

Organ system toxicity (non-reproductive)

CONCERN	REFERENCE
Classified as expected to be toxic or harmful	Environment Canada Domestic Substance List
Classified as medium human health priority	Environment Canada Domestic Substance List

Use restrictions

CONCERN	REFERENCE
Determined safe for use in cosmetics, subject to concentration or use limitations - Safe for use in cosmetics with some qualifications	Cosmetic Ingredient Review Assessments

Data gaps

CONCERN	REFERENCE
59 studies in PubMed science library may include information on the toxicity of this chemical	NLM PubMed

Ecotoxicology

CONCERN	REFERENCE
Not suspected to be an environmental toxin	Environment Canada Domestic Substance List

Persistence and bioaccumulation

CONCERN	REFERENCE
Not suspected to be bioaccumulative	Environment Canada Domestic Substance List

EC (Environment Canada). 2008. Domestic Substances List Categorization. Canadian Environmental Protection Act (CEPA) Environmental Registry.
CIR (Cosmetic Ingredient Review). 2006. CIR Compendium, containing abstracts, discussions, and conclusions of CIR cosmetic ingredient safety assessments. Washington DC.
NLM (National Library of Medicine). 2012. PubMed online scientific bibliography data. http://www.pubmed.gov.

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.

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