IFRA 50, 51, and 52: What’s the Difference — And Why It’s Okay If Not Everything Is Updated Yet

If you’ve ever looked at fragrance documentation and wondered why some oils list IFRA 50, others IFRA 51, and a few IFRA 52, you’re not alone. Makers see these numbers and immediately think: “Do I need the newest version? Is it unsafe if it’s not updated? Am I doing something wrong?”

Let’s clear the air.

The truth is simple: All three versions are part of the normal evolution of fragrance safety standards — and it’s completely okay if not every fragrance is updated to IFRA 52 yet, especially from a small company.

What IFRA Actually Is (and Isn’t)

Before diving into the versions, it helps to understand the basics:

• IFRA Standards are voluntary industry guidelines, not government laws.

• They help determine safe usage levels for fragrance materials.

• They are updated when new toxicology data becomes available.

• They are widely used, but not legally required in the United States.

So while IFRA is important, it’s not a regulatory emergency.

IFRA 50 → IFRA 51 → IFRA 52: What Changed?

IFRA 50 (2020)

The last version before the big restructuring.

• Used the older category system

• Stable and widely used for years

• No major format changes

• Still considered valid until replaced

Think of IFRA 50 as the “classic” version.

IFRA 51 (2020–2023)

The major overhaul — the one that required the most work across the entire fragrance industry.

What changed:

• Completely restructured categories

• New toxicology data

• Updated usage limits for many materials

• Some fragrances required reformulation

• New certificate format

• Huge administrative lift for suppliers

IFRA 51 was the big one. Many fragrance houses took or are still taking months or years to fully transition.

IFRA 52 (2023–2024)

Compared to IFRA 51, IFRA 52 is a light update.

What changed:

• Mostly clarifications

• Minor adjustments to a smaller number of materials

• Many fragrances saw no change at all

• Candle, soap and lotion usage levels often stayed the same

In short:

IFRA 51 was the transformation. IFRA 52 is the refinement.

If a fragrance didn’t change between 51 and 52, the IFRA 51 certificate is still fully accurate.

The Timeline: Why Updates Take Time

Here’s what most people don’t see behind the scenes:

1. IFRA releases the amendment — this goes first to fragrance manufacturers.

2. Fragrance houses review and test their formulas against the new data.

3. They update their internal documentation (which can take months).

4. Distributors like us receive the new information once the fragrance house finishes.

5. We then update our own records, SDS, and IFRA certificates manually — one fragrance at a time.

Each step takes time, especially when hundreds of fragrances are involved. So if you see IFRA 51 instead of 52, it doesn’t mean the fragrance is outdated — it simply means the update is still moving through the industry pipeline.

Do Companies With Fewer Than 10 Employees Have to Update?

This rumor pops up a lot, so let’s address it clearly:

❌ No — IFRA does NOT have an employee‑based exemption

❌ No — small companies are not “required” to update

❌ No — there is no IFRA deadline

❌ No — IFRA is not a legal mandate in the U.S.

The “under 10 employees” idea likely comes from unrelated EU micro‑business rules in other regulations.

But IFRA itself does not require updates based on company size.

What We Do as a Small Company

We take safety seriously — always have.

• All fragrances are IFRA compliant

• We provide accurate documentation

• We update to new amendments as they become relevant

• We prioritize fragrances that actually changed

• We update on request if a customer needs IFRA 52

Because we are a small company, each update takes time — and we want to do it correctly, not rushed.

If IFRA 52 Is Important to You — Just Ask

If you need an updated IFRA 52 certificate for a specific fragrance, we’re happy to prioritize it.

For many fragrances, the IFRA 51 and IFRA 52 numbers are identical — but if you need the updated format for your records, we’ll gladly prepare it.

Final Thoughts

IFRA 50, 51, and 52 are simply steps in the ongoing evolution of fragrance safety. Not every update is dramatic, and not every amendment requires immediate action.

As a small business, we balance:

• Accuracy

• Safety

• Transparency

• Realistic workloads

And we always make sure you have the information you need to create safely and confidently.

If you ever have questions about IFRA versions, usage levels, or documentation — reach out anytime.