Perfume Sample Approval Process | Evaluation Standards, Modifications, Production Readiness

Final approval should be based on the perfume that will actually go into production, not just the fragrance concentrate. The confirmed version needs to smell right at the final concentration, work with the finished formula and packaging, pass the required technical and market checks, and still match the approved reference after scale-up.

Keep three approval stages separate: Scent Approved, Technical Approved, and Production Approved. A fragrance can pass the scent review while stability, packaging, regulatory work, or pilot production is still unfinished. XUELEI's perfume OEM/ODM process keeps these stages separate so the formula produced in the factory stays tied to the version the customer approved.

Approval Brief

Write down the points that will be used to judge the sample before development begins.

A description such as "luxurious floral perfume" is too broad to guide a revision. It does not tell the perfumer which part of the fragrance is right or wrong.

A useful brief sounds more like this:

Clean white floral with a bright opening, low sweetness, smooth musk base, and moderate projection. Jasmine should remain noticeable in the heart. The dry-down should not become strongly vanilla, powdery, or heavy.

It also helps to separate non-negotiable points from small preferences:

A missed preference should not be treated the same as a failed must-have requirement. XUELEI's custom fragrance development guide covers the information that is normally fixed before scent, packaging, cost, and production decisions are made.

Sample Setup

Give every sample its own code, such as PF-01, PF-02, and PF-03. If PF-03 is changed, the new version should become PF-04 instead of replacing the original sample.

Sample condition can affect what the evaluator smells. A newly diluted sample and an older sample stored under different conditions are not a clean comparison if formula version is supposed to be the only variable.

When relevant, record the preparation date, dilution date, sample age, storage condition, product base, and application method. There is no fixed rule saying every perfume must sit for the same number of days before evaluation.

For example, a 15% sample stored for two weeks and a newly prepared 18% sample differ in both concentration and sample history. XUELEI's article on why custom perfume samples can smell different explains how concentration, storage, sample age, and process differences can affect what is smelled.

Scent Evaluation

For close comparisons, 2-4 candidate samples in one set are usually easier to judge than a large group of strong fragrances. This is a practical internal range, not an industry rule.

Use the same blotter type, application method, and timing for every version. If the same evaluation atomizer is used, 1-2 sprays per blotter can work as a simple internal method. What matters most is applying all samples in the same way.

These time points are useful for internal comparison. They are not legal requirements or fixed industry test intervals.

Blotter and skin testing answer different questions. Blotters are better for comparing formulas under similar conditions. Skin testing is useful once the choices have been narrowed down because skin temperature, skincare products, and body odor can change the way a perfume wears.

On skin, check whether the perfume becomes much sweeter, weaker, harsher, more musky, or noticeably different from the blotter. Use a finished perfume or a properly prepared sample intended for skin use. Undiluted fragrance concentrate should not be applied directly to skin for evaluation.

A perfume that still smells like musk after eight hours has good persistence, but that does not mean the full floral character lasted eight hours.

The feedback should describe the actual issue:

Longevity is acceptable, but projection becomes too low after two hours.

That gives the perfumer much more useful information than simply saying "make it stronger."

Score and Approve

A 1-5 scale is usually enough for comparing perfume samples without making the process more complicated than necessary.

A project may decide that important scent items need to reach 4/5 or 5/5 before Scent Approval. That is an internal decision rule, not a universal perfume standard.

Useful scoring areas include:

• match to brief;
• opening;
• heart;
• dry-down;
• overall balance;
• projection;
• longevity;
• character retention;
• commercial fit.

Technical problems should not be hidden inside the scent score.

For important group reviews, 3-5 evaluators can be a useful internal setup when suitable people are available. Each evaluator should write comments before group discussion. If four out of five people independently report the same dry-down issue, that result is more useful than a group opinion formed after one person speaks first.

The project should also name who can approve scent, technical checks, regulatory work, and production release. Conflicting comments should be settled before the next sample is sent back to the perfumer.

Revision Control

A useful revision request should say four things: what is wrong, when it happens, what result is wanted, and what should stay unchanged.

It is usually better to describe the scent result than to tell the perfumer which raw material to add.

Instead of: Add more vanilla.
Use: Make the late dry-down smoother and slightly warmer without increasing obvious sweetness.

If the general direction is already right, one revision round can focus on 1-3 major changes. Changing six or seven important parts of the perfume at the same time makes it much harder to see which change helped and which one created a new problem.

Keep a simple revision history so the team can see what changed from one version to the next:

Final Concentration

The fragrance concentrate and the finished perfume are not the same thing. Final scent approval should use the concentration that will actually be produced and sold.

Dilution can change the opening, heart, base balance, projection, sweetness, clarity, and alcohol impression.

It also changes how much fragrance concentrate is needed:

For a 100 kg batch, moving from 15% to 18% increases fragrance-concentrate use from 15 kg to 18 kg. That is 3 kg more concentrate, or a 20% increase compared with the original 15 kg usage.

This does not mean 18% is automatically better. A concentration change can also affect scent balance, cost, clarity, and safe-use calculations.

Always record both the formula version and the finished concentration. XUELEI's perfume concentration and dilution guide explains concentration, carrier, performance, and stability in more detail.

Finished Formula Tests

The finished perfume needs a clear appearance target and a stability plan that fits the actual formula and package.

A simple appearance requirement can be written as:

Appearance: Clear liquid, free from visible sediment.

ISO/TR 18811:2018 gives guidance on cosmetic stability testing but does not set one universal group of test conditions, parameters, or acceptance limits.^[1] The test plan therefore needs to fit the formula, package, storage conditions, and intended product.

If something changes during testing, use the type of failure to narrow down the possible cause:

These are possible areas to investigate, not automatic diagnoses. Accelerated testing can help find risk, but a short accelerated study should not be treated as proof of the full real-world shelf life.

XUELEI's perfume manufacturing process guide covers liquid preparation, holding, filtration, filling, packaging, and production QC.

Packaging Tests

Test the perfume in the real package or a fully representative version of it.

The bottle neck, pump, gasket, dip tube, and closure all work together. A pump that performs well with water or plain alcohol may behave differently once the final perfume is filled.

XUELEI's fragrance OEM quality-control guide covers bottle, atomizer, packaging, raw-material, and batch-control checks that can be used when setting project specifications.

Compliance Checks

IFRA: confirm the product type, fragrance concentration, applicable category, formula version, and current conformity information for the intended use.

IFRA states that a Certificate of Conformity applies to a fragrance mixture intended for use in a finished consumer product. It confirms conformity with the IFRA Standards for a stated use. IFRA itself does not issue the certificate, and the certificate does not replace finished-product safety assessment or local legal requirements.^[2]

If the same fragrance is moved from perfume into body care, a diffuser, a candle, or another product, the new use needs its own review. IFRA Standards use different product categories based on how consumers are exposed to the fragrance.^[3]

EU fragrance allergens: Regulation (EU) 2023/1545 changed the EU fragrance-allergen labeling rules. For the relevant Annex III entries, the general individual-labeling thresholds are:

• 0.001% in leave-on products;
• 0.01% in rinse-off products.

Fine fragrance applied to skin is normally a leave-on cosmetic. The actual Annex III entry and final finished-product concentration still need to be checked.^[4]

Qualifying products covered by the transition rules could be placed on the EU market until 31 July 2026 and made available until 31 July 2028, subject to the conditions in Regulation (EU) 2023/1545.^[5]

For products first placed on the EU market after 31 July 2026, the label should be reviewed against the current requirements.

EU finished product: an approved fragrance and an IFRA document do not complete EU cosmetic compliance. Regulation (EC) No 1223/2009 covers requirements including the Responsible Person, safety assessment, CPSR, PIF, notification, and labeling.^[6]

US market: MoCRA covers areas including safety substantiation, adverse-event reporting, facility registration, and cosmetic product listing, subject to the law's scope and exemptions.^[7]

FDA also states that cosmetic facility registration and product listing are not product approval programs.^[8] For that reason, a perfume should not be described as "FDA approved" simply because a facility or product has been registered or listed.

An SDS, IFRA Certificate of Conformity, allergen declaration, and finished-product safety assessment do different jobs. One should not be used as a substitute for another.

Formula Lock and Reapproval

Once the scent is approved, record the exact version clearly:

PF-08 dated [date] is the Scent Approved fragrance reference at [approved concentration].

Keep the sample code, concentration, product base, approval date, target market, approver, and retained-sample ID together.

Review the approval again when any of the following changes:

• fragrance formula;
• fragrance concentration;
• alcohol or other product base;
• important fragrance raw material;
• fragrance supplier when the supplied specification changes;
• product-contact packaging;
• manufacturing process that may affect the product;
• production site where controlled specifications may be affected;
• target market;
• applicable regulatory requirement;
• applicable IFRA requirement;
• stability or compatibility conditions.

Cost and Supply Check

Check cost and material supply before packaging and production are committed.

• fragrance cost at the approved formula;
• cost at the approved concentration;
• fragrance quantity required per batch;
• important supplier minimum quantities;
• raw-material availability;
• major lead-time risks;
• known sourcing risks.

The 100 kg example above shows the effect clearly: moving from 15% to 18% raises fragrance use from 15 kg to 18 kg before any other formula or process changes are counted.

Long-lead-time materials, discontinued ingredients, limited natural materials, supplier changes, and normal variation in natural materials can all affect repeat production. XUELEI's natural vs. synthetic fragrance guide covers material consistency, sourcing, stability, and cost differences.

Pilot Batch

The pilot or controlled scale-up batch should be compared directly with the approved reference.

Set the pilot acceptance rules before the batch is made. If it does not match the approved sample, check:

• raw-material lot variation;
• weighing error;
• incorrect dilution;
• mixing sequence;
• incomplete mixing;
• process conditions;
• filtration;
• conditioning or holding stage;
• sample handling.

The cause should be corrected before production. The approved reference should not be changed simply to make the pilot pass. XUELEI's perfume manufacturing process guide covers scale-up, filling, packaging, and final QC.

QC and Traceability

Keep at least one clearly identified retained sample of the approved perfume. Record the product name, fragrance code, formula version, concentration, batch or sample number, approval date, and storage information.

The retained sample can also change over time, especially if it is stored poorly or opened often. Its preparation date, container, opening history, and storage condition should be known when these points matter to a later comparison.

Production QC should use tests that have a clear purpose:

Each quantitative check should have a method, unit, acceptance range, sampling point, and responsible department.

A basic traceability chain should connect at least four identifiers: formula version, production batch number, relevant raw-material lot numbers, and QC/release result.

Typical batch records include:

• production batch number;
• raw-material lot numbers;
• actual quantities weighed;
• production date;
• equipment and operator;
• process steps;
• in-process checks;
• QC results;
• filling records;
• deviations;
• release status.

ISO 22716:2007 provides GMP guidelines covering the production, control, storage, and shipment of cosmetic products.^[9]

XUELEI's manufacturer quality and traceability guide explains how formula versions, retained samples, raw-material lots, packaging lots, production records, and release results can be linked when a batch difference needs to be investigated.

Production Release Checklist

Approval Record

A revision record can stay very short:

Keep: Fresh opening and floral heart.
Change: Reduce sweetness after 2 hours and soften the dry woody finish.
Decision: Revise.
Reason: Opening and heart meet the brief; dry-down becomes too woody after 4 hours.