In short
Handle perfumery materials as chemicals rather than as cosmetics: work in a ventilated space with small amounts, wear gloves and eye protection when you handle neat materials or as the safety data sheet advises, keep alcohol away from flames, label everything, and keep materials away from food, children and pets. Do not wear or taste what you make while you are learning.
What you will learn
- Set up a small workspace with basic controls
- Handle alcohol and neat materials with appropriate precautions
- Respond sensibly to a spill or skin contact
Before this lesson: Read a Material's CAS Number and SDS
Start with the right mindset
Raw materials at full strength are not the same as a finished perfume. Many are irritating or sensitizing when neat, and some are toxic if swallowed. Being careful is not about being afraid. It lets you keep doing this for years without developing an allergy to something you love. This lesson is general education for hobby-scale work. It is not a risk assessment of your setup, and the perfume lab safety guide goes further. A workplace also has its own legal duties.
Your workspace
- Ventilation. Work near an open window or with extraction. Vapors build up in a closed room, and they also spoil your ability to smell anything.
- No food or drink where you work, and keep your tools only for this. Do not use kitchen utensils and then return them to the kitchen.
- A wipeable, protected surface. Many oils damage plastics and finishes.
- Away from ignition sources. That includes candles, gas stoves, cigarettes and space heaters.
- Locked or high storage if children or pets could reach it. Keep original labels on everything.
Protecting yourself
| Risk | What to do |
|---|---|
| Skin contact | Wear suitable disposable gloves when handling neat materials. Check the SDS, since no glove suits every chemical. Change them when contaminated. |
| Eye contact | Wear safety glasses when pouring or dispensing. |
| Vapor | Ventilate, keep bottles capped when not in use, and avoid smelling neat materials up close. |
| Fire | Keep only small quantities of alcohol at hand. No flames. Know where your extinguisher or fire blanket is. |
| Swallowing | Keep materials labeled, out of reach and out of food containers. |
Alcohol specifically
Ethanol is highly flammable, and its vapor can catch fire from a nearby source. Never warm an alcohol dilution over a flame or on a hotplate. If you must warm something to dissolve it, use a warm water bath away from any ignition source. The guide to perfumer's alcohol explains the grades and why denatured alcohol must not be drunk. Rules on buying, storing and shipping alcohol differ from place to place.
If something goes wrong
- On skin: follow the SDS. This normally means washing with soap and plenty of water. Remove contaminated clothing. Do not use solvent to clean your skin.
- In the eyes: rinse with water as the SDS directs, and get medical advice.
- Swallowed: do not make the person vomit unless a professional tells you to. Call your local poison service or emergency number and have the SDS ready.
- Spill: ventilate, remove ignition sources, absorb it with an inert material, and bag it as the SDS advises. Oily rags can be a fire hazard, so do not leave them in a pile.
In an emergency, call your local emergency number first. Keep the numbers you would need written down near your bench.
Waste and disposal
Do not pour materials or solvents down the drain. Small amounts of waste still need to be handled according to local rules and the SDS's disposal section. Check what your local household hazardous waste service accepts.
Two rules for learners
First, what you make in these exercises is not to be worn. Study dilutions have not been checked against any standard or safety assessment, and a formula's safety depends on materials, amounts and product type. Level 10 explains how that is assessed. Second, labeling is a safety control and not just tidiness: an unlabeled clear liquid in a vial is a real hazard. Dilution basics shows you what to put on the label.
Practical exercise: Audit your workspace
Go through your actual space and write a checklist with these questions. Answer yes or no, and fix any no before you buy materials.
- Can I open a window or ventilate this space?
- Is there no flame, heater or smoker nearby?
- Do I have suitable gloves, safety glasses, paper towels and a sealable waste bag?
- Can children and pets be kept away from this space and from my storage?
- Do I have a labeling method that will not rub off?
- Is there a sink nearby? If not, how would I wash immediately?
- Have I written down my local emergency and poison numbers?
- Is the surface protected, and is it separate from where I prepare food?
You have done this well if you can answer yes to every question on this checklist, in writing, before your first weighing session, and your emergency numbers are where you can reach them.
Common mistakes
- Testing on your skin to see how it smells. Use strips while you are learning.
- Thinking natural means gentle. Many essential oils are classed as skin sensitizers or irritants, and some are flammable.
- Working with a candle nearby to set the mood. Alcohol vapor is flammable, and a scented candle would also confuse your nose.
- Decanting into drinks bottles or food jars. This is how accidental poisoning happens.
Safety
If you have asthma, allergies, skin conditions, are pregnant or have any other health concerns, seek medical advice before working with concentrated fragrance materials. Stop and get fresh air if you feel dizzy, nauseous or get a headache.
Key terms
- PPE
- Personal protective equipment, such as gloves and eye protection. The SDS for a material states what is advised.
- Skin sensitization
- An allergic response that can develop after exposure to a substance and can then recur at low levels of contact.
- Flash point
- The lowest temperature at which a liquid gives off enough vapor to ignite in the presence of a flame or spark.
Knowledge check
Written and reviewed by the RUŌOD Lab team. This is general education, not legal, regulatory, medical or safety advice. Example dilutions and exercises are for learning, are not validated products, and have not been safety-assessed. Completing a lesson confers no qualification. How we check these lessons.