Understanding IFRA 51st Amendment
Updated October 2026 · Regulatory reference
The IFRA 51st Amendment is the edition of the IFRA Standards in force today: it was notified on June 30, 2023, and its final compliance deadline — for fragrance creations already on the market — passed on October 30, 2025. It kept IFRA’s 12 product categories and settled where borderline products belong: pillow sprays in Category 11B, reed diffusers in Category 10A, and aftershaves of all types in Category 4. All of our professional fragrance oils are formulated to comply with it.
If you need IFRA 51 Regulatory Data Sheets, Safety Data Sheets (SDS), or other documentation, you’ll find IFRA and regulatory data under the “Documentation” tab on each fragrance page. For anything additional, you can submit a request through our Stock Fragrance Document Request page.
What Changed in the IFRA 51st Amendment?
- Clarification about paper products and printed substrates
- Clarification for fabric softener sheets, dryer sheets, and dry-cleaning kits
- Categorization of pillow sprays and similar linen products
- Categorization of reed diffusers and other passive air care devices
- Updated handling of trace components in fragrance formulas
- Phototoxicity considerations for Category 6 (oral/peri-oral products)
- Elimination of “sunblock” terminology in the guidance
- Make-up remover for face/eyes may include potential lip exposure
- “Aftershaves of all types” clarified in Category 4 (fine fragrance)
- Over 50 new and revised Standards notified with the 51st Amendment
What Is IFRA and How Does It Set Fragrance Limits?
The International Fragrance Association (IFRA) sets science-based Standards to help ensure fragrance safety across perfumes, cosmetics, personal care, home care, and more. IFRA’s work is informed by RIFM research and expressed through the IFRA Code of Practice.
How IFRA Regulates Fragrance
- Safety assessment: Toxicology, sensitization, and exposure evaluation for fragrance ingredients.
- Usage limits: Maximum acceptable concentrations (MACs) set for specific materials in finished products.
- Categories & Standards: Prohibitions, Restrictions, and Specifications organized by product category.
- Ongoing research: Standards are updated as new scientific data becomes available.
- Transparency: IFRA 51 Regulatory Data Sheets and supporting documents help brands and makers formulate responsibly.
- Regulatory alignment: Widely adopted as a global best-practice framework for fragrance safety.
If you prefer to work with fragrances that are already screened for many common regulatory and retailer frameworks, explore our IFRA compliant fragrance oils and non-toxic fragrance oils.
How Does IFRA 51 Differ from IFRA 50?
- Refined risk assessment (QRA2): Includes aggregate exposure and systemic toxicity considerations.
- Borderline product placement: Clearer categorization for body sprays, pillow sprays, and reed diffusers.
- Phototoxicity policy notes: Additional guidance for UV-exposed categories and how to treat phototoxic materials.
- Trace components: Clarified expectations for handling trace constituents in complex raw materials.
- Certificates & timelines: Updated IFRA Certificate of Conformity language and implementation schedules.
Which Ingredients Changed Between the 50th and 51st?
| Ingredient | Change | 50th (2021) | 51st (2023) |
|---|---|---|---|
| Dihydrocoumarin | Restriction updated | Restricted (2020) | Revised limit (2023) |
| p-Cresol / selected musks & ketones | New or revised entries | As listed | Updated 2023 entries |
| Tagetes oil & absolute | Phototoxicity clarified | Limits (2020) | Revised UV exposure notes (2023) |
The category, not the oil, sets the ceiling: the same material carries one maximum in a leave-on product and a different one in a household cleaner.
What Did the 51st Amendment Change on Our Own Data Sheets?
Lists of revised ingredients say what the Standards moved. They do not say whether the number you formulate to actually changed. That question can be answered directly, because every Stock Fragrance oil ships a regulatory data sheet that states its maximum usage level in each category — and thirty-four of the thirty-five sheets on file carry the 50th Amendment and the 51st side by side, each with its own full set of category limits, so a formulator mid-transition can read both on one page.
Comparing the two sets line by line, on thirty of thirty-one comparable categories per sheet:
- On twenty-nine of the thirty-four sheets, every category maximum is identical under both amendments. For most of this catalogue the 51st Amendment did not move the usable level at all.
- Five sheets differ, across sixty-one category lines in total. Fifty-six of those sixty-one are higher under the 51st than under the 50th.
- Five lines are lower, and all five sit on one oil in the same place — the Category 10A household-cleaning group, where the ceiling falls from 19.2 % to 12.2 %.
Two things follow. The first is that an amendment is not automatically a tightening: revised safety science moved most of these numbers up, not down. The second is that it is still the 51st block that has to be read, because the oil whose cleaning-product ceiling dropped by a third gives no sign of it anywhere else on the sheet.
One limit on what this measures: it is thirty-five Stock Fragrance oils, not the Standards as a whole. An amendment that revises a material this catalogue barely uses will not show up here at all, which is why the Standards — not a supplier’s sample of them — remain the reference.
What Comes After the 51st Amendment?
The 52nd Amendment is in preparation. IFRA’s consultation on it ran from 12 December 2025 to 12 June 2026, and IFRA published the End of Consultation Letter on 31 August 2026. As set out there, the amendment will introduce 48 new restriction Standards addressing potential dermal sensitization — 37 of them with an additional evaluation of systemic toxicity endpoints — along with 15 restriction Standards revised against updated RIFM Safety Assessments, a revised Standard for Musk ketone, a new specification requirement for Acetylated Vetiver Oil, and revisions to three Standards addressing phototoxicity. The renamed Furocoumarins in Natural Complex Substances Standard confirms an exposure-based approach — 1 ppm skin contact for products intended for deliberate sun exposure, 5 ppm for other leave-on products — and its notification withdraws eight individual Standards on natural complex substances.
None of it is in force yet. IFRA expects to publish the formal Notification in January 2027; from that date the 52nd Amendment Standards enter into force after 11 months for new creations and 30 months for existing creations, a preparatory phase two months longer than the 51st Amendment allowed. Until the Notification lands, the figures on an IFRA 51 Regulatory Data Sheet are the ones that govern a formulation, and every sheet we publish is written to the 51st.
What Are the IFRA Product Categories?
IFRA divides finished products into categories based on how and where they are used. When a product fits more than one description (for example, a spray that might contact both body and fabric), you should apply the most restrictive category.
Our fragrance oils are designed to be professional-quality and versatile, so the same fragrance can usually be used across multiple product types (perfume, skincare, candles, laundry, home care, etc.) as long as each formula respects the IFRA limit for its category. For collections organized by product format, see: Perfume & cologne fragrance oils, cold process soap fragrance oils, candle & home fragrance oils, and laundry & cleaning fragrance oils.
| Category | Description | Example products |
|---|---|---|
| 1 | Leave-on products applied to lips / potential ingestion | Lipstick, lip balm, certain toys with mouth contact |
| 2 | Leave-on products for the axillae | Deodorants, antiperspirants, body sprays (unless explicitly “not for underarm use”) |
| 3 | Applied to face with fingertips | Eye creams, facial makeup, makeup removers, face/body paint |
| 4 | Fine fragrance | Perfumes, colognes, aftershaves (all types), body sprays labeled “not for underarm use”. |
| 5A | Leave-on body products | Body lotion, body butter, body creams. |
| 5B | Leave-on face products | Face moisturizer, night cream, treatment serums |
| 5C | Leave-on hand products | Hand cream, leave-on hand treatments |
| 5D | Baby leave-on products | Baby oil, baby lotion, baby powder |
| 6 | Oral hygiene (rinse-off) / peri-oral exposure | Toothpaste, mouthwash, breath spray |
| 7A | Rinse-off hair products | Shampoo, rinse-off conditioner, hair masks. |
| 7B | Leave-on hair products | Hair spray, leave-in conditioner, dry/waterless shampoo |
| 8 | Significant anogenital exposure | Intimate wipes, feminine sprays |
| 9 | Rinse-off body/hand exposure | Soap, shower gel, body wash, liquid hand soap. |
| 10A | Household & fabric care (hand contact) | Reed diffusers, fabric sprays, hand dishwashing liquids, laundry fragrance. |
| 10B | Household aerosols/sprays (possible skin contact) | Air fresheners, pet sprays, household spray fresheners |
| 11A | Intended skin contact; minimal transfer (no UV) | Paper towels/napkins; some liners/pads |
| 11B | Intended skin contact; minimal transfer (with UV) | Pillow sprays; other UV-relevant substrates with limited transfer to skin |
| 12 | Non-skin contact; minimal/insignificant transfer | Candles, incense, dry-air devices, some paints and coatings. |
Important clarifications: Body sprays are Category 2 unless clearly labeled not for axilla use (then treat as Category 4). Pillow sprays fall under Category 11B due to limited transfer to facial skin before drying. Reed diffusers are treated as Category 10A because of consumer handling and fabric exposure.
Which IFRA Category Is My Product?
The table above is laid out the way IFRA writes it — by how and where a product is used. The question a maker actually asks runs the other way: I am making a body mist, so which category is that? The list below answers it in product words. Every row comes from the category table and the clarifications directly above it; nothing new is being decided here. Where a product could sit in two categories, the more restrictive one governs.
One oil, many finished products — and a different ceiling for each of them.
| What you are making | IFRA category | Why it lands there |
|---|---|---|
| Body mist or body spray | 2 | Treated as an underarm product unless the label says it is not for underarm use. |
| Body mist labeled “not for underarm use” | 4 | Once underarm use is excluded it is handled as fine fragrance. |
| Perfume, cologne, aftershave | 4 | Fine fragrance, all types. |
| Roll-on or solid perfume | 4 | Fine fragrance covers perfume in every format. |
| Lip balm or lip product | 1 | Applied to the lips, where some is swallowed. |
| Deodorant or antiperspirant | 2 | Leave-on product for the axillae. |
| Facial makeup, eye cream, makeup remover | 3 | Applied to the face with the fingertips. |
| Body lotion, body butter, body cream | 5A | Leave-on body product. |
| Face moisturizer, night cream, serum | 5B | Leave-on face product. |
| Hand cream | 5C | Leave-on hand product. |
| Baby lotion, baby oil, baby powder | 5D | Baby leave-on product. |
| Shampoo, rinse-off conditioner, hair mask | 7A | Rinse-off hair product. |
| Hair spray, leave-in conditioner, dry shampoo | 7B | Leave-on hair product. |
| Bar soap, body wash, shower gel, liquid hand soap | 9 | Rinse-off body and hand exposure. |
| Reed diffuser, fabric spray, laundry fragrance | 10A | Household and fabric care handled by hand. |
| Room spray, air freshener, pet spray | 10B | Household spray with possible skin contact. |
| Pillow spray | 11B | Limited transfer to facial skin before it dries. |
| Candle, incense, dry-air device | 12 | No skin contact and insignificant transfer. |
Format decides the category, not the fragrance. The same oil carries one maximum in a body lotion and another in a candle, so a product that spans two uses — a room spray that will settle on fabric and on skin — is formulated to the stricter of the two. Once the category is settled, read that category’s line on the fragrance’s IFRA 51 Regulatory Data Sheet and treat the figure as a ceiling rather than a target.
How Do You Apply IFRA Limits to a Product?
- Identify your product category. Start with the table above and choose the IFRA category that best matches how the product will be used. If a product reasonably fits multiple categories, use the more conservative (more restrictive) category.
- Get the IFRA 51 Regulatory Data Sheet. For each fragrance, download the IFRA 51 Regulatory Data Sheet from the “Documentation” tab on the fragrance product page or request it via our document request form if you need additional versions.
- Decide on a target fragrance dosage. Use your product brief (scent strength, base, price point, and performance needs) to choose a starting dosage. Then check that this dosage keeps every restricted material below its maximum for the applicable category on the IFRA 51 Regulatory Data Sheet. We do not recommend automatically using the IFRA maximum; instead, treat the limit as a ceiling and adjust dosage based on performance testing.
- Run calculation checks. Use our free Fragrance Oil Calculator to estimate how much fragrance oil you’ll need for your batch and to sanity-check fragrance load across different product sizes. Always confirm that your chosen percentage is at or below the IFRA limit for the category.
- Apply special policies. For UV-exposed skin categories, review phototoxicity notes for any relevant materials. Category 12 (non-skin contact, like candles) is generally not subject to phototoxicity limits, but IFRA restrictions on certain materials may still apply.
- Document your compliance. Keep IFRA 51 Regulatory Data Sheets, load calculations, and final formula records. When a product spans several potential uses (for example, a room spray that might contact skin and fabric), default to the most restrictive category.
Why Does IFRA Compliance Matter?
- Consumer safety: Helps reduce the risk of sensitization, irritation, and phototoxic reactions over real-world use.
- Regulatory alignment: Supports global cosmetic and chemical frameworks and many retailer requirements.
- Brand trust: IFRA-aware formulation, clear documentation, and responsible dosage decisions build confidence with customers and partners.
Our fragrances are designed as professional-quality oils suitable for use across a wide range of products — from fine fragrance and clean beauty & cosmetics to candles and home fragrance and laundry & cleaning — when used within the appropriate IFRA limits.
IFRA & Clean / Compliance-Focused Fragrance Collections
If you’re building a line around specific safety, sustainability, or retailer standards, these collections are a helpful starting point. All still require proper IFRA category selection and dosage, but each collection is curated around a particular framework.
By Safety, Clean & Standard Framework
- IFRA Compliant Fragrance Oils
- Non-Toxic Fragrance Oils
- Phthalate Free Fragrance Oils
- CMR Free Fragrance Oils
- California Prop 65 Compliant Fragrance Oils
- PFAS Free Fragrance Oils
- ECOCERT Compliant Fragrance Oils
- EWG Compliant Fragrance Oils
- Fragrance Oils for Clean Beauty & Cosmetics
- Eco-Friendly Fragrance Oils
- 100% Plant-Based (ISO 9235) Fragrance Oils
- Non-GMO Fragrance Oils
- Cruelty Free Fragrance Oils
- Vegan Fragrance Oils
By Product Type & Application
- Perfume & Cologne Fragrance Oils
- Fragrance Oils for Shampoo, Conditioner & Hair Products
- Fragrance Oils for Personal Care (Hair, Hand & Body)
- Candle & Home Fragrance Oils
- Fragrance Oils for Laundry & Cleaning
- Fragrance Oils for Cold Process Soap
- Fragrance Oils for Body Wash
- Fragrance Oils for Room Sprays
Frequently Asked Questions
Are all of your fragrance oils IFRA compliant?
Our fragrance oils are designed to comply with the latest IFRA Standards when used within the appropriate category limits. For each oil, you can download the IFRA 51 Regulatory Data Sheet from the “Documentation” tab on the product page, which shows applicable categories and maximum usage levels.
How much fragrance oil should I use in my formula?
The ideal dosage depends on your product type, base, and desired scent strength. Always check the IFRA 51 Regulatory Data Sheet for the relevant category and treat the listed percentage as a maximum, not a starting point. Begin below that limit and adjust based on stability, performance, and testing. Our Fragrance Oil Calculator can help you estimate how much oil you’ll need for your batch, but final usage decisions should always respect IFRA limits.
Where can I find documentation (IFRA, SDS, etc.) for your oils?
IFRA 51 Regulatory Data Sheets and other technical documents are posted on each fragrance product page under the “Documentation” tab. If you need additional documentation or a specific format, you can request it via our Stock Fragrance Document Request page.
Can you help with custom IFRA-compliant fragrance development?
Yes. We provide custom fragrance design and development, including IFRA-aware formulation across multiple product types and regions. To explore bespoke options, visit our Fragrance Design Services collection.
Do your fragrances work across multiple product types?
Our oils are professional-quality and constructed to perform across a wide range of formats — including fine fragrance, body care, haircare, candles, home fragrance, laundry, and cleaning products — provided each finished formula respects the IFRA limits for its category. If you’re planning a multi-product line built around one signature scent, we’re happy to help you think through categories and dosage ranges.
What is IFRA and how does it set fragrance limits?
The International Fragrance Association (IFRA) sets science-based Standards to help ensure fragrance safety across perfumes, cosmetics, personal care, home care, and more. IFRA’s work is informed by RIFM research and expressed through the IFRA Code of Practice.
What are the IFRA product categories?
IFRA divides finished products into categories based on how and where they are used. When a product fits more than one description (for example, a spray that might contact both body and fabric), you should apply the most restrictive category.
Why does IFRA compliance matter?
Consumer safety: helps reduce the risk of sensitization, irritation, and phototoxic reactions over real-world use. Regulatory alignment: supports global cosmetic and chemical frameworks and many retailer requirements. Brand trust: IFRA-aware formulation, clear documentation, and responsible dosage decisions build confidence with customers and partners.
Did the 51st Amendment lower the amount of fragrance oil I can use?
Usually not. Thirty-four of the thirty-five Stock Fragrance regulatory data sheets on file state limits under both the 50th and the 51st Amendment, and on twenty-nine of them every category maximum is the same under both. Where the two sets differ — five sheets, sixty-one category lines — fifty-six of those lines are higher under the 51st and five are lower. Read the 51st block on the sheet for the oil you are using rather than assuming a direction either way.
Which IFRA category is a body mist?
A body mist is Category 2 — the same category as deodorant and body spray — because IFRA treats anything that can reach the underarm as an axillae product. If the label clearly states that the product is not for underarm use, it is handled as Category 4, fine fragrance, and many materials carry a different maximum there. Settle which of the two applies before you set a dosage, then read that category’s line on the IFRA 51 Regulatory Data Sheet for the oil you are using.
Related Reading
More reference: the fragrance oil knowledge center collects every guide in one place, and the IFRA category lookup tool maps a product type to its category.
Still have questions or need help choosing the right fragrance oil for your project? Contact us and our team will be happy to assist.