Ingredient Evaluation Methodology
LEAF standards are developed through a rigorous review of scientific data and regulatory landscapes. Our focus is on long-term safety, product integrity, and complete transparency.
Scientific Literature
We leverage publicly available scientific literature and toxicological data to assess ingredient safety.
Regulatory Guidance
Criteria are informed by regulatory frameworks from Health Canada, the ECHA, and other global bodies.
Transparency Requirements
Full ingredient disclosure is mandatory. We evaluate the completeness of supply chain documentation.
Internal Review Criteria
LEAF applies internal safety criteria focused on persistence, bioaccumulation, and sensitization potential.
LEAF standards are continuously reviewed and updated as new research and ingredient data become available.
LEAF uses a multi-faceted approach to determine ingredient safety and integrity. Our methodology is built on data-driven review criteria that prioritize long-term consumer health and environmental impact.
Restricted Criteria Focus
- Endocrine Disruption: Identifying compounds that interfere with signaling.
- Bioaccumulation: Assessing the potential for substances to persist in tissue.
- Environmental Persistence: Evaluation of chemical breakdown timelines.
- Disclosure Gaps: Refusal due to incomplete formulation data.
- Emerging Toxicology: Ongoing review of new clinical research.
CORE EVALUATION CHANNELS
- Publicly available scientific literature
- Regulatory guidance (Health Canada, ECHA)
- Internal ingredient review criteria
- Transparency & disclosure verification
LEAF standards are dynamic; we continuously adapt our protocols as global toxicological data and material science evolve.
Prohibited & Restricted Ingredients
Forever Chemicals (PFAS)
Restricted due to concerns surrounding long-term exposure and environmental persistence. Per- and polyfluoroalkyl substances do not break down over time.
Fragrance Compounds
Restricted due to limited ingredient transparency. Complex synthetic mixtures often contain undisclosed compounds subject to ongoing scientific review.
Endocrine Disruption Concerns
Including Phthalates, restricted due to concerns surrounding biological signaling interference. Subject to strict international oversight and ongoing review.
Heavy Metals
Restricted due to bioaccumulation potential and systemic toxicity. Includes Lead, Mercury, and Arsenic levels in raw and finished materials.
Transparency & Disclosure
Restricted due to incomplete ingredient disclosure. Full supply chain disclosure is mandatory to achieve and maintain LEAF Approval status.
Verification Tiers
- LEAF Approved
- LEAF Restricted
- LEAF Transparency Verified
- LEAF Pending Review
All substances listed above are subject to LEAF’s rigorous monitoring protocols and ongoing scientific and regulatory review to ensure consumer safety and product integrity.
Transparency & Disclosure Standards
Origin Standard mandates full disclosure from manufacturers regarding all product components and sourcing information. We prioritize transparency to ensure long-term consumer awareness and ingredient accountability.
- Ingredient disclosure expectations
- Fragrance transparency policies
- Material sourcing requirements
- Formulation update accountability
Transparency Verified: Full supply chain documentation required for all material certifications. Restricted due to limited historical transparency.
Origin Approved: Verification of non-toxic processing methods and zero pesticide usage. Subject to regular review.
Pending Review: Independent laboratory audit for detection of emerging toxicology concerns and endocrine disruptors.
THE LEAF PHILOSOPHY
The LEAF Standard
LEAF initiates a new era of product integrity through our mission to prioritize transparency, informed consumer choice, and ingredient safety. Our standards are science-informed protocols designed to eliminate hidden hazards and ensure that consumer goods never compromise long-term well-being.
Reference Frameworks
Our certification protocols are informed by the most rigorous global scientific bodies and regulatory standards to ensure consumer safety and product integrity. LEAF standards reference publicly available data from these recognized frameworks.
Health Canada
European Chemicals Agency (ECHA)
FDA Public Databases
Scientific Literature
Ingredient Safety Databases
Regulatory Restriction Lists
Disclaimer
The LEAF Standard and associated evaluations do not diagnose, treat, cure, or prevent disease. Information provided by LEAF is intended for educational and informational purposes only. Standards and ingredient policies may evolve as scientific understanding and regulatory guidance develop over time. LEAF standards are based on publicly available scientific literature, regulatory guidance, and internal transparency criteria. LEAF does not provide medical advice, diagnosis, or treatment. The information provided is for educational and guidance purposes only and is not a substitute for professional consultation.
Forever Chemicals
PFAS
Restricted due to concerns surrounding long-term exposure. Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals that do not break down in the environment or the human body. LEAF certification requires strict verification of material origins to ensure these persistent compounds are excluded from primary supply chains.
Transparency Concern
Fragrance Compounds
Restricted due to limited ingredient transparency. Consumer products may contain hundreds of synthetic compounds under a single term. LEAF requires full disclosure or verified plant-based essential oils to ensure product integrity. Synthetic fragrance is subject to ongoing scientific and regulatory review.
Biological Impact
Endocrine Disruption
Restricted due to concerns surrounding biological interference. Phthalates are restricted due to concerns surrounding long-term exposure and interference with natural biological signaling. At LEAF, we maintain a rigorous framework to monitor substances that mimic or interfere with natural hormone functions.
Bioaccumulation Risk
Heavy Metals
Restricted due to bioaccumulation potential and systemic toxicity. Monitoring includes Lead, Mercury, and Arsenic levels in raw materials and finished goods. Subject to strict international oversight and continuous supply chain verification to ensure consumer safety and product integrity.
Verification Status
Disclosure Compliance
Restricted due to incomplete ingredient disclosure. Ingredients must meet full supply chain transparency requirements to remain LEAF Approved. Failure to provide comprehensive safety data results in immediate restricted status pending independently verified laboratory review.
Fragrance Compounds
Restricted due to limited ingredient transparency. Due to regulatory frameworks, consumer products may contain hundreds of synthetic compounds under the single term 'fragrance.' LEAF requires full supply chain disclosure or verified plant-based essential oils.
Transparency Standard
Disclosure Expectations
Restricted due to limited ingredient transparency. LEAF requires manufacturers to provide complete constituent breakdown of all fragrance mixtures to verify safety.
Regulatory Compliance
Ongoing Scientific Review
Subject to ongoing scientific and regulatory review. Compounds identified by international bodies as sensitizers or disruptors are prohibited from the LEAF Approved list.
Synthetic fragrance compounds remain a primary focus of LEAF standards due to the high incidence of skin sensitization and respiratory concerns associated with undisclosed materials.
Textile & Material Standards
01
Approved Materials
We exclusively allow organic fibers like GOTS-certified cotton, linen, and hemp. Each material is verified for zero pesticide usage and non-toxic processing throughout the manufacturing chain.
02
Prohibited Finishes
Synthetic flame retardants, PFAS-based water repellents, and formaldehyde finishes are strictly banned. We review chemical safety data sheets for every finish applied to the final textile product.
03
The Review Process
Our audit includes site inspections and third-party laboratory testing to detect endocrine disruptors. We ensure all textile certification claims map back to verifiable supply chain documentation.
Certification & Review Process
Leaf Standard advocates for transparency and product integrity through a rigorous, science-informed certification framework.
01
Brand Applies
Initial submission of brand mission and product categories for review.
02
Ingredient Review
Comprehensive evaluation of all ingredients and material components.
03
Transparency Verification
Verification of supply chain documentation and material origins.
04
Approval or Revision
Granting of LEAF status or detailed request for formulation updates.
05
Ongoing Compliance
Continuous monitoring and periodic re-audits for sustained integrity.