Salon and Barbershop Lighting Design: Getting Colour Right from Chair to Street
Salon and Barbershop Lighting Design: Getting Colour Right from Chair to Street
A salon is one of the few interiors where lighting is part of the service being sold.
That makes it an unusually interesting brief. The light has to be accurate enough for a colourist to judge tone properly, and flattering enough that someone can sit in front of a mirror for two hours and enjoy what they see. Those two things pull in opposite directions, and resolving them is much of the work.
When it goes wrong, it usually shows up in the same way. The client loves the colour at the chair, pays, walks out, catches her reflection in a shop window, and the tone is not what she just approved.
The hair has not changed.
The light has.
This guide covers how to get that right: what the standards actually require, how to zone colour temperature, why mirror lighting works or fails based on geometry, and what to do about daylight. There is a specification checklist at the end that you can take to a supplier.
A note on how figures are labelled. Where a number comes from a published standard, this guide names the standard. Where it is common industry practice, it says so. Where something follows from how light physically behaves, the reasoning is shown rather than simply asserted. In many cases, you can check it yourself by sitting in the chair and looking up.
Why Hair Colour Changes in Different Light
Colour is not something an object simply has. What you see is the light bouncing off it, which means the light source is half the equation. Change the light, change the colour.
Different light sources have different spectral distributions. Warm sources generally contain more energy at the red end of the spectrum, while daylight varies considerably across the visible spectrum. A tone that looks neutral under warm salon lighting can therefore appear different outside, while an ash tone that looks correct under one source can appear green or muddy under another.
The technical term is metamerism: two colours that match under one light source but not another.
Three versions of this can turn up in a salon.
The client's version. Colour matches at the chair, then looks different in the street. This is the shop window moment.
The disagreement version. Two people look at the same hair, in the same light, and describe it differently. People genuinely vary in their colour perception, so a stylist and client can see different things and both be reporting honestly.
The angle version. Hair is shiny and directional, so colour can appear different depending on where the light comes from and where you stand. Strictly speaking, this is more about how hair reflects light than metamerism itself, but the effect on a colourist's work can be similar.
You cannot design metamerism away. What you can do is make sure colour is judged under a controlled light source that provides a useful reference, reducing the difference between the salon and the conditions in which the client will see the colour afterwards.
What the Standards Say
Europe and the US take different approaches, so here is both.
Europe: BS EN 12464 1
BS EN 12464 1 is the relevant European reference for indoor workplace lighting. Hairdressing is specifically addressed, with requirements covering maintained illuminance, uniformity, glare, colour rendering and the luminous environment.
The current edition is BS EN 12464 1:2021. The 2021 edition also places greater emphasis on vertical and cylindrical illuminance, which is particularly relevant when the task involves faces and hair.
Older editions and online summaries commonly show the following figures for hairdressing:
| Value | Typical requirement |
|---|---|
| Maintained illuminance | 500 lux |
| Glare limit | UGRL 19 |
| Colour rendering | Ra 90 |
The important point is that hairdressing requires a high level of colour rendering. Accurate colour perception is part of the task, not simply a visual comfort consideration.
An honest note on editions. Older figures are still widely reproduced online, which can create confusion. If you are specifying for compliance, work from the current edition of BS EN 12464 1 rather than relying on an online summary.
United States: IES
The US has no equivalent single legal standard for salon lighting. The Illuminating Engineering Society publishes recommendations that may be referenced by codes, clients and designers, but they are not law in themselves.
Published IES lighting level tables commonly give 50 to 100 footcandles, approximately 538 to 1,076 lux, for barber shops and beauty parlours.
Because IES recommendations are edition and application specific, check the current IES Lighting Library when compliance is required.
Side by Side
| Europe | United States | |
|---|---|---|
| Source | BS EN 12464 1 | IES recommendations |
| Light level | 500 lux | 538 to 1,076 lux |
| Legal status | Referenced by workplace regulations | Guidance, referenced by codes |
The two approaches are broadly compatible, with the US recommendation allowing for a wider range of illuminance depending on the task.
The Four Numbers That Matter
1. Light Level
500 lux maintained illuminance is the starting point for the styling task.
But do not stop at the horizontal work plane. Because the task is centred around a person's face and hair, vertical and cylindrical illuminance also matter.
A salon can achieve a good horizontal illuminance result while still leaving faces poorly illuminated. The geometry of the light matters just as much as the number.
2. CRI
CRI describes how accurately a light source renders colour compared with a reference source.
For hairdressing and colour critical tasks, specify Ra 90 or better. For colour mixing and checking, Ra 95 or above is a sensible higher performance target.
The important point is that the headline Ra figure does not tell the whole story.
3. R9
This is the one most people miss.
General CRI, or Ra, is calculated from eight test colours. Strong saturated red is not included, which is why R9 is measured separately.
A light can therefore have a high Ra value while still having weak red rendering. That can affect how coppers, auburns, warm browns and warm skin tones are perceived.
Common practice is to specify R9 above 50 as a minimum and above 80 at colour stations.
Ask for the R9 value directly. It is often missing from the front of a luminaire specification sheet.
4. Glare
UGRL 19 or lower is the target for the styling environment.
Then do something the calculation cannot do for you: check the fixture from both positions before committing.
Sit in the chair like a client. Stand where the stylist works. Both positions interact with the mirror, and a luminaire that is comfortable from one position is not automatically comfortable from the other.
Colour Temperature: Zone It
Warm light can create a welcoming and flattering atmosphere.
Daylight range light can provide a useful reference because it is closer to the conditions in which the client will ultimately see the colour outside.
You do not have to choose one or the other. Zone the salon instead.
| Zone | Colour temperature | Why |
|---|---|---|
| Reception and retail | 2,700 to 3,000K | Warm welcome and flattering first impression |
| Waiting and lounge | 2,700 to 3,000K | Comfort and atmosphere |
| Shampoo area | 2,700 to 3,000K | Relaxed environment |
| Styling stations | 3,500 to 4,000K | Neutral working light |
| Colour mixing bar | Around 5,000K | Controlled colour preparation environment |
| Colour check point | Around 5,000K | Consistent reference before the client leaves |
This zoning is design practice, not a standard requirement. Neither BS EN 12464 1 nor the IES mandates a particular colour temperature for salons. Both address factors such as illuminance, glare and colour rendering and leave CCT to the designer.
Do not use 6,500K as a default room temperature
6,500K is commonly associated with D65, an important reference in colour measurement. That does not mean a 6,500K source is automatically the best choice for an occupied salon.
A salon is a space where people spend considerable time looking at themselves in a mirror. A room wide 6,500K scheme can feel unnecessarily cool and clinical, particularly when the space is intended to feel comfortable and welcoming.
The application matters. A controlled viewing booth used for brief colour assessment has a different purpose from a salon where someone sits for two hours.
Make CCT changes legible
Where possible, make colour temperature transitions happen at a clear spatial boundary rather than placing two noticeably different colour temperatures directly beside each other.
A doorway, bulkhead, change in material or other architectural transition can help separate the zones and make the change feel intentional.
The Mirror
This is where many salons go wrong, and the reason is pure geometry.
Light from directly above does not work well for facial illumination.
When the main light comes from above, it arrives at the face steeply. The brow, nose and chin each block the light and throw shadows downwards. The result is dark eye sockets, a shadow under the nose and a hard line beneath the jaw.
Increasing the brightness does not solve the geometry.
Light from the sides works much better.
Put a source on each side of the mirror at approximately face height and the two sources help fill each other's shadows. The result is more even facial illumination.
This is why traditional dressing room mirrors use light around the sides rather than relying on a single source above.
Salon chairs create another problem
Salon chairs are height adjustable, and stylists move them constantly during a service.
A wall light fixed at one height can be correct for one chair position and wrong for another.
This is where vertical light sources either side of the mirror become useful. They remain effective across a wider range of chair heights.
Whatever source you use, diffuse it. A bare lamp at face height can create glare for the client and reflections in the mirror.
Add some soft light from above as well, but keep it secondary. A little downward light gives hair shape and helps reveal how it falls.
Front light for the face. Gentle top light for the hair.
Daylight: The Reference That Will Not Sit Still
Everything above assumes some control over the light. A salon with large windows does not.
Daylight is useful because it is one of the conditions under which the client will ultimately see the colour. But it is also highly variable.
Daylight is not one colour temperature
The CIE defines a series of standard daylight illuminants because daylight varies in spectral distribution.
| Illuminant | Approx. CCT | Common reference |
|---|---|---|
| D50 | 5,000K | Graphic arts and colour evaluation |
| D55 | 5,500K | CIE daylight illuminant |
| D65 | 6,500K | Representative average daylight |
| D75 | 7,500K | CIE daylight illuminant |
The CIE notes that daylight varies with season, time of day and geographic location.
So when a client says her colour looked different outside, the honest answer is that outside is not a fixed condition either.
Windows create a second lighting condition
Styling stations are often positioned along a window wall because natural light is attractive and photographs well.
The problem is that faces need frontal illumination, while daylight may arrive from the side or behind.
The result is two different lighting conditions in the same room. After dark, the mirror lighting may work exactly as designed. During the day, it competes with a stronger and differently distributed source.
Neither condition is necessarily wrong. They simply need to be designed as two conditions.
What to do about it
Put the colour check point away from direct daylight.
If there is one position where colour is judged before the client leaves, make it controlled. Use a wall away from glazing and provide a known, consistent light source.
Colour matching standards such as ISO 3668 and ASTM D1729 specify controlled viewing conditions for colour assessment. A salon is not a laboratory, but the principle carries across: if the judgement matters, control the light rather than relying entirely on the window.
Specify shading that can actually be used.
Blinds or sheers near colour work should be operable by staff. The objective is not to block daylight permanently, but to remove it from the equation when tone needs to be assessed.
Keep direct sun off working positions.
Direct sunlight is intense, moving and highly directional. It is not a stable colour reference.
Check the room twice.
Once in daylight and once after dark. A salon that only works in one of those conditions is only half designed.
The Shampoo Station
Here is a check you can run in almost any salon in ten seconds.
Sit in a shampoo chair. Lean back as if you are having your hair washed. Look up.
Whatever is on that ceiling is what the client looks at for the duration of the wash.
In many salons, it is a downlight.
The shampoo is often the most relaxing part of the visit. A bright source directly in the eyeline can undo that experience.
What works instead
• Avoid placing a bright source directly above the reclined head position.
• Consider lower ambient levels, around 150 to 200 lux, with dimming where appropriate.
• Keep the light warm, around 2,700 to 3,000K.
• Use indirect sources such as coves, wall washing or concealed perimeter lighting.
• Give staff their own task light, positioned so they can work without putting a bright source in the client's eyes.
Quick Reference
The values below combine standard requirements and ARCHLIOR design recommendations. They are not a substitute for project specific calculations or the applicable edition of BS EN 12464 1.
| Zone | Target | Status |
|---|---|---|
| Styling station | 500 lux maintained illuminance | Standard reference |
| Colour mixing bar | 750 to 1,000 lux | Design recommendation |
| Colour check point | Around 750 lux | Design recommendation |
| Reception and retail | Around 300 lux | Design recommendation |
| Waiting and lounge | 150 to 200 lux | Design recommendation |
| Shampoo area | 150 to 200 lux | Design recommendation |
| Circulation | Around 150 lux | Design recommendation |
Specification Checklist
Take this to a supplier or contractor.
Ask the supplier for
• CRI or Ra figure for every fixture. Minimum 90 at working positions, with 95 or above recommended at colour critical stations.
• R9 figure, separately. Minimum 50, with 80 or above recommended at colour stations.
• UGR data. Target 19 or lower at styling stations.
• Colour temperature for each fixture, confirmed at order stage.
• Colour consistency between fixtures. Ask about SDCM or binning tolerance.
• Dimming compatibility, confirmed against the specific dimmer being used.
Check on site before sign off
• Measure the specified work plane according to the applicable standard and check vertical or cylindrical illumination where relevant.
• Sit in the styling chair. Can you see a bare lamp or glare source?
• Stand where the stylist works. Same question.
• Sit in the shampoo chair and lean back. What is directly above you?
• Stand at reception and look toward the colour area. Can you see noticeably different colour temperatures at the same time?
• Look at a colour swatch at the mixing bar, then near a window. How far does it shift?
• Visit twice, once in daylight and once after dark.
• At the colour check position, can daylight be controlled when needed?
• Does direct sun land on any working position at any point in the day?
Seven Mistakes to Avoid
1. One colour temperature everywhere.
No single setting serves a relaxing reception and a colour critical work area equally well.
2. Asking for CRI and forgetting R9.
A high Ra value does not guarantee strong red rendering.
3. Lighting the mirror from above.
The geometry creates shadows under the brow, nose and jaw. More brightness does not fix the problem.
4. A downlight directly over the shampoo basin.
The client is reclined and looking straight towards it.
5. Placing noticeably different colour temperatures directly beside each other.
Make transitions legible through the architecture where possible.
6. Specifying only to the horizontal plane.
The task involves faces and hair, so vertical and cylindrical illumination also deserve attention.
7. Designing for one time of day.
A salon with large windows has different lighting conditions during daylight and after dark. Check both before sign off.
Frequently Asked Questions
How much light does a hair salon need?
For hairdressing, 500 lux maintained illuminance is the key European reference in BS EN 12464 1, alongside requirements for glare and colour rendering. In the US, published IES tables commonly give 50 to 100 footcandles, approximately 538 to 1,076 lux, for beauty parlours and barber shops. Colour mixing and checking areas can require higher levels depending on the task and design.
What colour temperature is best for a salon?
There is no single correct CCT for the entire space. A useful starting point is 2,700 to 3,000K for reception, lounge and shampoo areas, 3,500 to 4,000K for styling, and around 5,000K for controlled colour preparation and checking areas. These are design recommendations, not requirements of BS EN 12464 1.
Why does hair colour look different outside the salon?
Because colour depends on the light falling on the hair. Different light sources have different spectral distributions, so the same hair can appear different under salon lighting and daylight. This can involve metamerism, where colours match under one light source but not another.
What CRI do salon lights need?
For hairdressing and colour critical tasks, specify Ra 90 or better. For colour mixing and checking, Ra 95 or above is a sensible higher performance target. Always request the R9 value as well.
What is R9 and why does it matter for hair?
R9 measures the rendering of saturated red separately from the general Ra calculation. A light can therefore have a high Ra while still performing poorly with reds. This matters for coppers, auburns, warm browns and warm skin tones. A useful design target is R9 above 80 at colour stations.
Should salon mirror lights go above or beside the mirror?
Beside, wherever possible. Light from above creates shadows beneath the brow, nose and chin. Vertical sources on both sides of the mirror provide more even facial illumination and remain effective across different chair heights.
How should the shampoo area be lit?
Keep it warm, comfortable and predominantly indirect. Around 150 to 200 lux at 2,700 to 3,000K can be a useful starting point for the ambient environment. Avoid bright sources directly in the client's eyeline and provide separate task lighting for staff.
Is natural light good or bad for a salon?
Both. Daylight provides an important reference, but it changes with time, season, weather and location. Use it where it helps, but provide a controlled colour check point when accurate colour assessment matters.
Where should the colour check point go?
Ideally away from direct daylight, on a wall with a consistent and controlled light source. The objective is to provide a repeatable condition for assessing colour before the client leaves.
Is barbershop lighting different from salon lighting?
The colour critical requirements may be less demanding in a barbershop that does little or no colour work, so a dedicated 5,000K colour preparation area may not be necessary. However, the fundamentals remain the same: good facial illumination, controlled glare, appropriate colour rendering and lighting that supports precise cutting and detailing.
Notice
This article is published by ARCHLIOR for general information and educational purposes. It is intended as an introduction to salon and barbershop lighting for architects, interior designers, lighting designers and specifiers.
It is not professional lighting design advice, electrical engineering advice, or a statement of regulatory compliance for any specific project.
Standards, illuminance levels and design recommendations referenced in this article should be checked against the current editions of the relevant standards and the regulations applicable to the project location. Project specific lighting calculations, electrical design and compliance should be undertaken by appropriately qualified professionals.
The design recommendations presented in this article represent general industry practice and ARCHLIOR's own design guidance. They should not be treated as mandatory requirements unless explicitly identified as such.