Chile: EU Siloxane Restrictions Apply To Cosmetics — D4 Prohibited, D5 And D6 Limited

EU cosmetic ingredient restrictions are increasingly influencing regulatory requirements beyond Europe. Chile is a notable example, where the country's cosmetic regulatory framework references EU ingredient requirements and the Chilean Public Health Institute (ISP) has communicated implementation expectations for substances restricted under the EU framework.

For cosmetic manufacturers, brand owners, importers and distributors selling into Chile, this creates an important compliance consideration for cyclic siloxanes, particularly D4, D5 and D6.

The EU restrictions address the use of:

• D4 — Octamethylcyclotetrasiloxane 
• D5 — Decamethylcyclopentasiloxane 
• D6 — Dodecamethylcyclohexasiloxane 

Under the EU framework, D4 is subject to prohibition because of its applicable hazard classification, while D5 and D6 are subject to concentration restrictions in cosmetic products.

Chile's regulatory framework can incorporate EU cosmetic ingredient requirements through its regulatory references and the ISP's GICONA system. As a result, companies marketing cosmetics in Chile need to consider not only Chilean requirements but also the relevant EU restriction timelines incorporated into local implementation.

What Is Happening with D4, D5 and D6?

Cyclic siloxanes are used in cosmetic formulations for properties such as:

• Skin-conditioning 
• Hair-conditioning 
• Spread ability 
• Sensory enhancement 
• Volatility 
• Product texture 
• Emollient performance 

However, certain cyclic siloxanes have faced increasing regulatory scrutiny because of their environmental and hazard profiles.

The three substances receiving particular attention are:

The practical implication is straightforward: companies selling cosmetics in Chile should review formulations containing these substances and determine whether the products remain compliant under the applicable Chilean implementation requirements.

Why EU Cosmetic Restrictions Matter in Chile

Chile's cosmetic regulatory framework is established under Supreme Decree 239/2002, which governs sanitary control of cosmetic products.

An important feature of the Chilean framework is its use of international regulatory references for cosmetic ingredients.

The Instituto de Salud Pública de Chile (ISP) maintains the GICONA system and incorporates applicable cosmetic ingredient information and restrictions.

This means that EU regulatory developments can have consequences for companies operating in Chile.

For multinational cosmetic manufacturers, the compliance exercise therefore cannot always be separated into:

EU compliance

versus

Chile compliance

Instead, companies should assess whether an EU restriction has been incorporated or referenced through Chile's regulatory framework and whether the ISP has established a local implementation timeline.

D4: Why Is It Prohibited?

D4 — Octamethylcyclotetrasiloxane is subject to a particularly stringent regulatory position.

D4 has been classified under the EU framework with CMR properties, meaning carcinogenic, mutagenic or toxic for reproduction, depending on the applicable classification.

Because of this classification, the substance does not receive the same type of transitional treatment applicable to certain other restricted ingredients.

For cosmetic companies, the practical compliance message is important:

D4 should not be present in cosmetic formulations intended for the Chilean market where the applicable prohibition applies.

Companies should therefore identify D4 across:

• Formulation records 
• Raw-material specifications 
• Ingredient inventories 
• Supplier documentation 
• Finished-product formulas 
• Product Information Files 
• Safety documentation 
• Regulatory databases 

Simply checking the finished-product label may not be sufficient.

D4 can potentially be present as a formulation ingredient or require assessment as part of raw-material specifications and impurity considerations.

D5 and D6: The 0.1% Restriction

Unlike D4, D5 and D6 are subject to concentration limits rather than an outright prohibition under the applicable restriction framework.

The relevant limit is:

Maximum concentration: 0.1%

The EU restriction applies according to product type and implementation date.

For cosmetic products, the relevant timelines are:

Rinse-Off Cosmetics

The restriction applies from:

June 6, 2026

Leave-On Cosmetics

The restriction applies from:

June 6, 2027

These dates are particularly relevant for companies managing global cosmetic portfolios because the same formulation may be marketed across multiple jurisdictions.

A product that remains compliant in one market may require reformulation or additional regulatory assessment in another.

How Does This Affect Chile?

Chile's implementation adds another layer to the compliance analysis.

Industry guidance in Chile has interpreted local implementation as:

January 1, 2027 — Manufacture and import compliance

and

July 1, 2028 — Withdrawal of non-compliant products from the market

This creates a transition period for companies to assess existing products, update formulations and manage inventory.

For businesses selling imported cosmetics in Chile, this means that compliance planning should begin before the relevant local implementation dates.

Companies should not wait until inventory withdrawal deadlines approach.

What Products Could Be Affected?

The restrictions can potentially affect a broad range of cosmetic formulations where volatile silicones are used.

Potentially affected categories include:

Haircare

• Shampoos 
• Conditioners 
• Hair masks 
• Hair treatments 
• Styling products 
• Serums 

Skincare

• Creams 
• Lotions 
• Serums 
• Facial treatments 
• Body-care products 

Makeup

• Foundations 
• Primers 
• Concealers 
• Other silicone-containing formulations 

Personal Care

• Deodorants 
• Body products 
• Other leave-on or rinse-off formulations 

The exact regulatory impact depends on the substance, concentration, product classification and applicable transition requirements.

Why Product Classification Matters

One of the most important compliance steps is determining whether the product is a rinse-off or leave-on cosmetic.

This distinction can affect the applicable restriction timeline.

For example, a formulation containing D5 or D6 that is used as a rinse-off cosmetic may be subject to the restriction from an earlier date than a comparable leave-on formulation.

Therefore, regulatory teams should avoid applying a single deadline across an entire product portfolio.

Instead, companies should build a product-by-product assessment.

What Should Cosmetic Companies Review?

A structured formulation review should cover more than the ingredient list.

Companies should evaluate:

1. Raw Materials

Identify whether D4, D5 or D6 is present in raw materials supplied by third parties.

2. Finished Formulations

Confirm the concentration of each restricted substance in the finished cosmetic.

3. Product Classification

Determine whether each product is rinse-off, leave-on or falls into another relevant category.

4. Market Status

Identify whether the product is:

• In development 
• Newly manufactured 
• Imported 
• Already distributed 
• Currently on the Chilean market

5. Regulatory Documentation

Review formulation specifications, product documentation and supporting safety information.

6. Supplier Controls

Obtain current specifications and declarations from raw material suppliers where necessary.

7. Reformulation Requirements

Where concentrations exceed applicable limits, assess alternatives and reformulation options.

EU vs Chile: Why Companies Need a Dual Assessment

Companies with global cosmetic portfolios should avoid if compliance in the EU automatically equals compliance in Chile.

A more appropriate approach is:

EU restriction → Chilean regulatory reference → ISP implementation → product-specific assessment

This regulatory chain is important because the actual compliance obligation in Chile depends on the applicable Chilean framework and implementation mechanism.

A company should therefore maintain documentation showing how the regulatory conclusion was reached.

D4, D5 and D6 Compliance Checklist

Cosmetic companies marketing products in Chile should consider the following:

• Identify all products containing D4, D5 or D6
• Review raw-material specifications
• Confirm finished-product concentrations
• Verify product classification
• Assess rinse-off versus leave-on status
• Review applicable EU restrictions
• Confirm Chilean implementation requirements
• Check applicable manufacturing and import dates
• Review existing Chilean inventory
• Assess products scheduled for future launch
• Obtain updated supplier declarations
• Evaluate reformulation requirements
• Update product documentation
• Review of regulatory submissions where applicable
• Assess labeling and ingredient-list implications
• Establish an inventory transition strategy
• Monitor ISP regulatory communications
• Maintain regulatory intelligence on EU restrictions

What Happens If a Product Is Non-Compliant?

Companies should not assume that existing inventory can continue to be sold indefinitely simply because the product was previously accepted or marketed.

Where a formulation becomes subject to a new restriction, companies should evaluate:

• Manufacturing dates 
• Import dates 
• Existing inventory 
• Distribution status 
• Market withdrawal deadlines 
• Reformulation requirements 
• Regulatory documentation 
• Product notification or registration status 

This is particularly important for multinational brands because regulatory changes can affect products already in commercial distribution.

A proactive transition strategy can help companies minimize unnecessary product disruption.

Why Regulatory Intelligence Matters

The D4, D5 and D6 situation demonstrates a broader trend in global cosmetics regulation.

Ingredient restrictions increasingly move across jurisdictions through:

Regulatory references → international standards → regional frameworks → national implementation

For global cosmetic companies, monitoring only the regulations of the country where a product is manufactured may no longer be sufficient.

Companies should monitor:

• EU Cosmetics Regulation updates
• EU REACH restrictions where relevant 
• EU classification developments 
• Chilean ISP communications 
• GICONA requirements 
• Chilean cosmetic regulations 
• Ingredient-list changes 
• Local implementation deadlines 
• Market withdrawal requirements 

This is especially important for companies using centralized global formulations.

Frequently Asked Questions

1. Are D4, D5 and D6 restricted in cosmetics sold in Chile?
Yes. Chile’s ISP references EU ingredient lists through its cosmetic regulatory framework, so companies should assess D4, D5 and D6 cosmetic compliance against applicable restrictions and Chilean implementation requirements. 

2. What is the EU limit for D5 and D6 in cosmetics?
The applicable EU REACH restriction establishes a 0.1% by-weight threshold for D4, D5 and D6 in covered mixtures, with specific cosmetic derogations and timelines. 

3. When do the D4, D5 and D6 restrictions apply to cosmetics?
Under EU Regulation 2024/1328, the restriction for wash-off cosmetic products applies to D4 and D5 from the earlier restriction date, while for other cosmetic products the relevant provision applies after 6 June 2027. Companies should assess the exact product category and substance before applying a deadline. 

4. Why are D4, D5 and D6 important for Chile cosmetic compliance?
Chile’s ISP states that EU cosmetic ingredient lists are incorporated into the GICONA ingredient database and that companies must review formulations when ingredients become restricted or prohibited. This makes EU cosmetic regulations, Chile cosmetic compliance and ISP requirements important parts of the assessment. 

5. Which cosmetic products may contain D4, D5 or D6?
Potentially affected products include haircare, skincare, makeup, deodorants, serums, conditioners, styling products and other silicone-containing cosmetics. A formulation-level ingredient and concentration review is necessary to determine compliance.

6. What should cosmetic companies do if D4, D5 or D6 are identified?
Companies should conduct a cosmetic formulation compliance assessment, verify concentrations, review raw-material specifications, classify the product as rinse-off or leave-on, check applicable Chile and EU restrictions, and determine whether reformulation or inventory transition is required.

7. How can Maven Regulatory Solutions support D4, D5 and D6 compliance?
Maven can support Chile cosmetic regulatory compliance, EU cosmetic ingredient assessment, D4/D5/D6 formulation review, restricted substance assessment, raw-material review, product classification, regulatory gap assessment, reformulation assessment, labeling review and regulatory intelligence.

How Maven Regulatory Solutions Can Help

Maven Regulatory Solutions supports cosmetic manufacturers, brand owners, importers and distributors with global cosmetic regulatory compliance and market-entry strategy.

Our support can include:

• Cosmetic Ingredient Compliance Assessment 
• Chile Cosmetic Regulatory Compliance 
• EU Cosmetic Regulatory Assessment 
• D4/D5/D6 Formulation Review 
• Restricted Substance Assessment 
• Ingredient & Raw-Material Review 
• Cosmetic Product Classification 
• Formulation Compliance Assessment 
• Regulatory Gap Assessment 
• Product Information File Support 
• Label & Ingredient List Review 
• Supplier Documentation Review 
• Reformulation Regulatory Assessment 
• Market Entry Support 
• Regulatory Intelligence 
• Post-Market Compliance Monitoring 

Conclusion

The evolving regulatory treatment of D4, D5 and D6 demonstrates why cosmetic compliance strategies increasingly need to look beyond individual jurisdictions.

For companies selling cosmetics in Chile, the EU restrictions on cyclic siloxanes can have practical implications because Chile's cosmetic framework incorporates EU ingredient requirements through its regulatory mechanisms.

The key points for industry are:

• D4 → Prohibited
• D5 → 0.1% limit
• D6 → 0.1% limit

For D5 and D6, companies should distinguish between the applicable timelines for rinse-off and leave-on cosmetics, while also considering Chile's locally communicated implementation and inventory transition dates.

The regulatory priority is therefore clear: identify affected formulations, verify concentrations, assess product classification, confirm applicable Chilean deadlines and begin reformulation or inventory planning where necessary.

EU cosmetic ingredient restrictions are increasingly relevant outside Europe. For companies operating in Chile, proactive regulatory intelligence can help prevent formulation gaps from becoming market-access or compliance problems.

Maven Regulatory Solutions — Science. Compliance. Impact.