How to Create a Safety Data Sheet for a Cosmetic Raw Material Supplier

If your business manufactures, blends, or imports a raw material that meets the hazard classification criteria under CLP, you are legally required to prepare and issue a compliant Safety Data Sheet under REACH Article 31, formatted according to Annex II of the REACH Regulation, as amended by Commission Regulation (EU) 2015/830. This guide walks through what a compliant SDS actually requires, who is allowed to prepare one, and the practical steps for getting it right the first time particularly relevant for suppliers of fragrance blends, active ingredients, and specialty raw materials into the cosmetic industry.

Who Is Legally Allowed to Write an SDS?

This is more tightly regulated than most people expect. REACH Annex II specifically states that a Safety Data Sheet must be prepared by a competent person who takes into account the specific needs and knowledge of the intended audience. It also requires that suppliers ensure this competent person has received appropriate training, including refresher training, on an ongoing basis not a one-off qualification treated as permanent.

In practice, this means an SDS shouldn't be drafted casually by whoever happens to manage regulatory paperwork that week. It should be produced or reviewed by someone with genuine working knowledge of CLP hazard classification, toxicology, and the specific SDS format requirements.

The Legal Format Requirement

The structure of a compliant SDS isn't a matter of house style it's dictated by law. Commission Regulation (EU) 2015/830 amended REACH Annex II to set out the current mandatory 16-heading format, along with detailed sub-requirements for what each section must contain. The regulation is explicit that the SDS is not a fixed-length document: its length should be proportionate to the hazard of the substance and the information available, but every mandatory heading and sub-heading must still be addressed.

The same legal text sets firm rules on tone and language: information must be written in a clear and concise manner, avoiding jargon, acronyms, and abbreviations, and using language a non-specialist reader in the supply chain can act on. Certain phrases are explicitly banned a supplier cannot write "may be dangerous," "no health effects," "safe under most conditions of use," or "harmless" if that statement is inconsistent with the substance's actual classification.

Step-by-Step: Preparing a Compliant SDS

Step 1 — Confirm the substance or mixture's CLP classification

Before writing a single section, establish the hazard classification using available toxicological, physical, and ecological data, or through bridging principles for mixtures built from known, already-classified components.

Step 2 — Gather composition data

Compile the exact chemical identity and concentration (or concentration range, where confidentiality provisions apply) of every hazardous component, ready for Section 3.

Step 3 — Draft each of the 16 mandatory sections in full

Work through Sections 1 to 16 systematically, ensuring every sub-heading required by Annex II is addressed including sections that may only need a brief "not applicable" or "no data available" where genuinely appropriate.

Step 4 — Cross-check consistency with any Chemical Safety Report

Where a Chemical Safety Report exists for the substance, the SDS content must be consistent with it, and relevant exposure scenarios should be attached as an annex to the SDS.

Step 5 — Date and version the document correctly

The compilation date must appear on the first page. If the SDS is later revised, the changes must be flagged to recipients, typically referenced in Section 16.

Step 6 — Issue it to customers at or before first supply

The SDS must reach the customer free of charge, in the correct language for the market, at or before the first delivery of the substance or mixture.

Common Pitfalls When Preparing an SDS

Pitfall #1 — Using a generic template without adapting it to the specific substance. A copy-pasted SDS that doesn't reflect the actual hazard profile of your specific material is not compliant, even if it looks complete.

Pitfall #2 — Reassurance language that contradicts the classification. Phrases suggesting a hazardous substance is "safe" or "harmless" are specifically prohibited when inconsistent with its actual classification.

Pitfall #3 — Leaving sections blank instead of addressing them properly. Every heading needs a substantive response, even if that response is a properly reasoned "not applicable."

Pitfall #4 — Not updating the SDS after a formulation or classification change. Revisions must be actively communicated to existing recipients, not silently absorbed into the next reprint.

What Cosmetic Brands Should Check When Receiving a Supplier's SDS

If you're on the receiving end a cosmetic brand buying fragrance concentrates, actives, or other raw materials a few quick checks help confirm the SDS you've been given is genuinely fit for purpose:

• Does it follow the full 16-heading structure, with every section addressed?
• Is the language plain and specific, free from vague reassurance statements?
• Does the compilation date on the first page look current, and is there a clear revision history if it's been updated?
• Is the classification in Section 2 consistent with the composition data in Section 3?
• Was it provided in the correct language for your market, without requiring translation before your safety assessor can use it?

Frequently Asked Questions

Can a small raw material supplier write their own SDS in-house?
Yes, provided it's prepared or reviewed by a competent person with genuine CLP hazard classification knowledge and kept current through ongoing training there's no requirement to outsource it to a third party, though many smaller suppliers choose to for assurance.

Is there a minimum or maximum length for an SDS?
No fixed length is mandated. The document's length should be proportionate to the hazard of the substance and the information available, but all 16 mandatory headings must still be addressed regardless of overall length.

What happens if my SDS becomes outdated after I discover new hazard data?
You are expected to revise the SDS and communicate the change to recipients, generally referenced through Section 16, without unreasonable delay once new, relevant safety information becomes available.

Does an SDS need to be provided in the customer's own language?
Yes, in practice suppliers should provide the SDS in the official language(s) of the member state where the substance is placed on the market, so the intended audience can understand and act on it.

Is a Certificate of Analysis an acceptable substitute for an SDS?
No. A Certificate of Analysis confirms batch-specific quality parameters; it does not address hazard classification, handling, or safety information, and cannot substitute for a properly compiled SDS.

Final Word

Writing a compliant SDS isn't about filling in a template it's a legally defined exercise in accurate, plain-language hazard communication, prepared by someone genuinely qualified to make the classification calls involved. Get the fundamentals right correct classification, complete sections, honest language, timely revisions and the rest of the document follows naturally.

Sourcing raw materials and want your supplier documentation reviewed? NestQual prepares CPSRs, PIFs, and full compliance packs for cosmetic brands entering the UK, EU, and global markets including checking that your supplier SDSs actually hold up before they feed into your safety assessment.

Get a CPSR for your product See the Complete Compliance Pack

Sources

1. Regulation (EC) No 1907/2006 (REACH), Annex II, Part A — General Requirements for Compiling a Safety Data Sheet — legislation.gov.uk
2. Commission Regulation (EU) 2015/830 amending REACH Annex II (Safety Data Sheet format) — legislation.gov.uk
3. European Chemicals Agency, Guidance on the Compilation of Safety Data Sheets — echa.europa.eu
4. Health and Safety Executive (HSE), Background: The Globally Harmonised System (GHS) — hse.gov.uk
5. Cosmetic, Toiletry and Perfumery Association (CTPA), Safety of Cosmetics — ctpa.org.uk

This article is for general information and does not constitute legal advice. Always confirm current requirements for your specific product and market with a qualified safety assessor or Responsible Person.