Silicon-based compounds used in cosmetics, personal care, and industrial applications, including cyclic (D4, D5, D6) and linear siloxanes, subject to increasing regulatory scrutiny due to persistence and bioaccumulation.
Foresight tracks Siloxanes developments and surfaces the alerts most likely to matter before they turn into missed deadlines, recalls, or escalation work.
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Last updated
5 May 2026, 07:23
Source-backed regulatory and guidance signals tracked by Foresight, with the newest developments first.
EU CARACAL Uploads Member State Comments on CLP 25th ATP Proposals for Silica and D5/D6
Member State competent authorities have uploaded new CARACAL comment documents on draft CLP 25th Adaptation to Technical Progress (ATP) entries for silica and substances labelled D5 and D6 in late April 2026. This signals that these substances remain under active scrutiny for future harmonised classification changes under EU CLP, and companies relying on them should monitor forthcoming 25th ATP proposals and decisions.
European UnionCanada Issues CEPA Ministerial Condition No. 22468 for Siloxanes and Silicones (CAS 915223-67-5)
Canada has published a CEPA ministerial condition for a new siloxane/silicone polymer (CAS 915223-67-5), allowing manufacture and import only under strict release-response, transfer-notification, and five-year recordkeeping rules effective 30 March 2026. For chemical manufacturers and importers handling this polymer, this creates a binding, notifier-specific compliance framework that must be built into contracts, emergency procedures, and data systems and signals continued scrutiny of higher-risk silicone chemistries.
CanadaEU Commission Confirms Siltac Is a Plant Protection Product Requiring Authorisation Under Regulation 1107/2009
The European Commission confirmed that siloxane-based insect control products acting via physical mechanisms are classified as Plant Protection Products under Regulation 1107/2009. Manufacturers must now secure formal pesticide authorizations to maintain market access, ending the use of non-PPP regulatory pathways for these substances.
European UnionEU CLH Intention Announced for 1,1,3,3-Tetramethyldisiloxane
Belgium has notified ECHA of its intention to propose harmonised classification for 1,1,3,3-tetramethyldisiloxane, with a formal dossier expected by mid-2027. Proposed classifications for reproductive toxicity and irritation signal future tightening of hazard communication requirements and potential downstream restrictions for this siloxane.
European UnionJapan CAA Updates Annex 1–21 Monomer Reference For Food-Contact Positive List
Japan’s Consumer Affairs Agency updated the Annex 1–21 monomer reference list for food-contact materials on March 26, 2026. Manufacturers should audit internal substance databases against this revised reference file to ensure accurate compliance reporting and alignment with the positive list for polymer base materials.
JapanUS EPA Finalises Tolerance Exemption for Dimethylpolysiloxane (CAS 63148-62-9) in Pesticide Formulations
The US EPA has expanded the tolerance exemption for dimethylpolysiloxane in pesticide formulations by lowering the minimum molecular weight threshold, effective March 2026. This regulatory easing provides greater formulation flexibility for manufacturers while streamlining compliance for residues on food and feed commodities.
United StatesVietnam Recalls 291 Cosmetic Products Containing Cyclotetrasiloxane (D4 / Octamethylcyclotetrasiloxane)
Vietnam has ordered the immediate recall and market suspension of 291 cosmetic products containing Cyclotetrasiloxane (D4) to align with ASEAN-wide restrictions. This enforcement action signals heightened regional scrutiny of siloxanes and necessitates immediate formulation reviews to mitigate market access risks in Southeast Asia.
VietnamDenmark: Consumer Council Tænk Identifies Suspected Endocrine Disruptors in EU Lip Balms
A major consumer safety investigation has identified suspected endocrine disruptors and allergens in a significant portion of lip balms sold across the European market. This high-profile scrutiny increases the likelihood of future EU-wide restrictions on specific UV filters, siloxanes, and mineral oils used in leave-on cosmetic formulations.
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DenmarkGreat Britain: Environment Agency Plans Enforcement Campaign on D4 and D5 in Wash-Off Cosmetics
The UK Environment Agency is launching a targeted enforcement campaign to identify and remove wash-off cosmetics containing restricted siloxanes (D4 and D5) from the market. Manufacturers and retailers should immediately audit formulations and supply chain controls to mitigate the risk of product withdrawals and regulatory action, particularly for items sold via e-commerce platforms.
United KingdomECHA PBT Expert Group Assesses Long-Range Transport Potential of cVMS (D4, D5, D6)
ECHA has concluded that siloxanes D4, D5, and D6 exhibit long-range transport and deposition potential comparable to persistent organic pollutants. This consensus solidifies the basis for upcoming 2026 REACH restrictions and signals a high probability of future global regulatory action under the Stockholm Convention.
European UnionSwitzerland Consults on Amendments to the PIC Ordinance (ChemPICV)
Switzerland is proposing a significant expansion of the PIC Ordinance to include a wide range of restricted industrial chemicals, PFAS, and pesticides. Exporters must prepare for increased administrative burdens and mandatory notification requirements for affected substances starting in December 2026.
SwitzerlandNetherlands Supreme Court Confirms GN 3808 Classification of Dimeticon Lice Lotion
The Netherlands Supreme Court has confirmed that dimeticon-based head-lice treatments must be classified as insecticides (GN 3808) rather than hair-care preparations (GN 3305). This ruling increases customs duty from 0% to 6% for these products, signaling stricter tariff enforcement for "physical action" pest controls marketed as cosmetics.
NetherlandsChina NMPA Incorporates 27 Standards and Test Methods Into STSC (2015 Edition)
China has updated its cosmetic safety standards with 27 new or revised technical requirements and test methods taking effect in stages from July 2026. Manufacturers must review formulations for newly restricted substances including PFAS and siloxanes while upgrading testing protocols to meet stricter microbial and safety benchmarks.
ChinaCanada Issues Ministerial Condition No. 22407 For Siloxane/Silicone Substance (CAS 3086114-77-1) Under CEPA
Canada has implemented mandatory restrictions and reporting requirements for the import and manufacture of a specific siloxane substance effective January 2026. Businesses must implement rigorous supply chain notification and record-keeping protocols to ensure continued compliance and market access for this material.
CanadaUS FDA Seeks Comments on Proposed Class II Device Exemptions From 510(k) Premarket Notification
The US FDA has proposed exempting a specific list of Class II medical devices from 510(k) premarket notification requirements, with comments due by April 7, 2026. This initiative aims to accelerate market access for low-to-moderate risk products while shifting the compliance focus toward technical limitations and general quality controls.
United StatesMERCOSUR Adopts Technical Regulation on Silicones in Food-Contact Materials (GMC Resolution No. 34/2025)
MERCOSUR has established new technical requirements and positive lists for silicones in food-contact materials, with implementation expected by mid-2026. Businesses must verify silicone formulations and supply chain compliance to maintain market access across Argentina, Brazil, Paraguay, and Uruguay.
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UruguayNorway and Sweden Submit CLH Proposal for Dimethylsilanediol
Norway and Sweden have formally submitted a proposal to classify dimethylsilanediol as a reproductive toxicant and a PMT/vPvM substance under the EU CLP Regulation. A harmonized classification would mandate stricter labeling and likely trigger downstream restrictions for siloxane-based materials in consumer and industrial products.
European UnionAustralia (AICIS) Updates CAS Names For 89 AIIC Chemicals
Australia has updated 89 chemical names on its national inventory to align with international CAS nomenclature standards. While substance identities are unchanged, companies should update internal records and labels to maintain administrative alignment with the official registry.
AustraliaConsumer Test Finds Harmful Chemicals in Popular Hair Oils
Danish consumer testing has identified widespread use of persistent siloxanes and endocrine-disrupting fragrances in hair oils ahead of strict EU concentration limits starting June 2027. Manufacturers must prioritize the reformulation of leave-on cosmetics to eliminate substances of very high concern and address potential legal and reputational risks regarding ingredient purity claims.
European UnionEPA Finalises Significant New Use Rules for 35 Chemicals
The US EPA has finalized Significant New Use Rules for 35 chemical substances under TSCA, effective January 5, 2026. Manufacturers and processors must notify the EPA 90 days before modifying product concentrations, workplace protections, or hazard communications to avoid non-compliance and market access delays.
United StatesThese are just a few of the most recent Siloxanes alerts. Foresight tracks every jurisdiction, every day — and surfaces only what affects your portfolio, with full citations and evidence.
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Definition
Silicon-based compounds used in cosmetics, personal care, and industrial applications, including cyclic (D4, D5, D6) and linear siloxanes, subject to increasing regulatory scrutiny due to persistence and bioaccumulation.
Industry relevance
Siloxanes developments can change product scope, supplier expectations, market access, reporting duties, and risk ownership. Foresight tracks the signals early so teams can respond before obligations become urgent.
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Foresight monitors official sources, extracts structured regulatory intelligence, and maps alerts to a customer's products, substances, markets, and priorities so teams see the relevant signal with source evidence for review.
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