About Lowlights
Lowlights are a hair colouring technique that weaves darker shades through the hair to add depth, richness and dimension. Where highlights lift sections to a lighter tone, lowlights do the opposite, introducing deeper strands that create contrast and a natural, multi-tonal finish. They are often used to soften an over-lightened look, restore warmth to hair that has become flat or brassy, or give fine hair the appearance of more density. A stylist typically applies the colour to selected sections using foils, or hand-paints it through the hair for a softer, more blended balayage-style effect. The shades chosen usually sit a level or two below your base colour or existing highlights, and the intensity can be tailored from a subtle, barely-there depth to a bold, defined contrast depending on the look you want. Lowlights suit most hair types and are generally low-risk, though because permanent and semi-permanent colours contain dyes that can cause allergic reactions, an allergy alert test before your appointment is an important safeguard. A good stylist will discuss your hair history, condition and goals first so the result flatters your natural colouring and is realistic to maintain.
On the day, and after
During the treatment
Your stylist will usually begin by confirming the shades and reviewing where the lowlights will sit to give the balance and contrast you discussed. Your hair is sectioned, and the darker colour is applied to selected strands, either wrapped in foils for precise placement or hand-painted through the hair for a softer, more blended finish. The colour is then left to develop for a set time, which varies with the products used and the depth being achieved. During this stage you can typically relax, and your stylist may check the colour's progress as it develops. Once ready, the colour is rinsed out, and a toner or gloss may be applied to refine the tone and add shine. A conditioning treatment often follows, and your hair is then blow-dried and styled so you can see the result. Depending on how many sections are being coloured, expect the appointment to take anywhere from around an hour to a few hours.
How it feels
Having lowlights applied is generally comfortable and relaxing. You may feel the gentle tension of your hair being sectioned and, with foils, a slight weight or warmth as they sit close to the scalp while the colour develops. The colour itself should not sting or burn; a mild coolness or the sensation of product on the scalp is normal, but any noticeable itching, tingling, stinging or burning is not and should be mentioned to your stylist straight away, as it can signal a reaction. The rinsing, toning and conditioning stages are usually soothing, and the blow-dry at the end is comfortable. If you have a sensitive scalp, let your stylist know so they can take extra care with sectioning and product placement.
Results and maintenance
Lowlights typically last around six to eight weeks before regrowth and fading become noticeable, though this varies with how fast your hair grows, how often you wash it and the products you use. Because the darker tones are woven through rather than covering the whole head, regrowth tends to be softer and more forgiving than an all-over colour, which can make the look easier to maintain. To keep the result fresh, use colour-safe, sulphate-free products, wash less frequently and in lukewarm water, and protect your hair from strong heat and UV. A toner or gloss every few weeks helps maintain the tone and adds shine, and a regular conditioning mask keeps the hair in good condition, particularly if it has also been lightened. Your stylist can advise on the right interval between appointments for your hair and the effect you want, and the depth and contrast can be adjusted over time as your natural colour or preferences change.
Before and after your appointment
Before your appointment
Book a consultation before your appointment so your stylist can look at your hair's condition, natural level and any previous colour, and agree the shades and placement with you. Where colour products containing dyes such as PPD are being used, an allergy alert test should be carried out in good time beforehand, typically at least 48 hours ahead, even if you have been coloured before, because sensitivities can develop over time. Arrive with your hair in its usual condition unless your stylist advises otherwise; you generally do not need to wash it immediately before, as natural oils can help protect the scalp. Avoid using heavy styling products on the day. If you have recently used henna, box dye or a colour remover, tell your stylist, as these can affect how the colour takes. Bring photos of the depth and effect you are hoping for, and mention any medication, scalp conditions or past reactions to hair colour so the approach can be adjusted for you.
Aftercare
To keep your lowlights looking their best, wait around 48 hours before your first wash where possible, as this gives the colour time to settle. Use a sulphate-free, colour-safe shampoo and conditioner, and wash with lukewarm rather than hot water, which helps preserve tone and shine. Try to limit how often you wash, as frequent washing can fade colour more quickly. Heat styling and strong UV exposure can also dull the result, so use a heat protectant and consider a hat or UV-protective product in strong sun. A weekly nourishing mask helps maintain condition, particularly if your hair was already dry or previously lightened. Your stylist may recommend a toning or purple shampoo or an occasional gloss to keep the tone fresh between visits. If you swim, wet your hair with clean water and apply conditioner beforehand, as chlorine and salt water can affect coloured hair. Follow any specific product advice your stylist gives, as this is tailored to your hair.
There is no downtime with lowlights, and you can return to your normal routine straight away. The main thing to be mindful of is giving the colour time to settle, so ideally delay washing for around 48 hours and avoid heavy heat styling in the first day or two. In the rare event you notice scalp itching, redness, swelling or discomfort after colouring, rinse the area and seek advice, as this can signal a reaction to the dye. Otherwise, coloured hair simply benefits from gentle, colour-safe care to keep the tone and shine looking fresh for as long as possible.
Safety and medical considerations
Safety essentials
Lowlights are generally a low-risk salon treatment, but because permanent and many semi-permanent colours contain dyes such as PPD that can trigger allergic reactions, safety centres on proper testing and a competent, insured stylist. An allergy alert test carried out ahead of your appointment is the key safeguard, and it matters even if you have been coloured many times before, because a sensitivity can build up over repeated exposure. Skipping this step is a real concern: if a reaction occurs and no test was done, an insured practitioner can be found at fault in a claim, and more importantly you risk an avoidable reaction. A skilled stylist will also protect your scalp, mix and apply products correctly, and monitor development time to avoid over-processing that can damage the hair. Tell your stylist about any scalp conditions, previous colour reactions, medications or recent treatments, as these can affect suitability. Reputable salons follow manufacturer guidance and keep records of your tests and colour history.
Medical considerations
Lowlights are a cosmetic hair treatment rather than a medical procedure, but there are a few health points worth flagging to your stylist. The most important is allergy risk: hair colour ingredients, particularly PPD, can cause contact dermatitis or, rarely, more serious allergic reactions, so any history of reaction to hair dye, temporary black henna tattoos or related chemicals should be raised, and an allergy alert test carried out. If you have a scalp condition such as psoriasis, eczema or broken or irritated skin, or you are undergoing treatment that affects your skin or hair, mention this, as colouring may need to wait. Some people prefer to avoid or postpone chemical hair colour during pregnancy; current UK advice generally regards occasional use as low-risk, but if you have any concerns it is sensible to speak to your GP or midwife. If you have had a previous reaction or are unsure about your suitability, seek advice from your GP or a dermatologist before booking. Your stylist is not a medical professional and cannot diagnose or treat skin conditions.
Patch testing
Yes. An allergy alert test, sometimes called a patch or skin test, is strongly recommended before any colour containing dyes such as PPD, and reputable UK salons treat it as standard. It is usually done at least 48 hours beforehand by applying a small amount of product behind the ear or on the inner arm and watching for any reaction. It matters even if you have been coloured before, because sensitivities can develop over time with repeated exposure. Framed around risk and liability, skipping the test can leave an insured stylist found at fault if a client reacts, and it protects you from an avoidable reaction. It is worth knowing that a patch test is a helpful safeguard rather than a guarantee, as it cannot rule out every possible reaction, so any tingling, itching or swelling during colouring should always be reported straight away.
Knowing a good practitioner
Green flags
Good practice starts with a thorough consultation where the stylist looks at your hair's condition and history, discusses the shades and placement, and sets honest expectations about the result and upkeep. They will arrange an allergy alert test ahead of your appointment when dye-based colour is being used, keep a record of it, and explain why it matters even for regular colour clients. A reputable stylist is qualified, insured and works in clean premises, mixes and applies products according to manufacturer guidance, and monitors development time to protect your hair. They will ask about scalp conditions, medications and past reactions, tailor the depth and contrast to suit you, and be willing to say when a look may not be achievable in one visit. Clear aftercare advice and a sensible maintenance plan are also signs of a considerate, professional service.
Red flags
Be cautious if a salon offers to colour your hair with a permanent or dye-based product without ever mentioning or carrying out an allergy alert test, or dismisses your request for one because you have been coloured before. Other warning signs include a stylist who does not ask about your hair history, scalp condition, medication or previous reactions, or who rushes you into a service without a proper consultation. Reluctance to discuss the shades, likely condition of your hair after lightening or realistic maintenance is also a concern. Premises that look unclean, reuse products in an unhygienic way, or cannot confirm they are insured should give you pause. During the treatment, burning, stinging, significant itching or swelling of the scalp is not normal and should be raised immediately rather than left to develop.
Questions to ask
- Will I need an allergy alert test, and when should it be done before my appointment?
- Which shades and placement do you recommend for my natural colour and skin tone, and how much contrast will there be?
- Will lowlights damage or dry out my hair, especially if it has been lightened before?
- How long will the appointment take, and how many foils or sections are involved?
- How often will I need to come back for maintenance, and what will that cost?
- What aftercare and products do you recommend to keep the tone and condition looking good?
Frequently asked questions
What is the difference between highlights and lowlights?
Highlights lift sections of hair to a lighter shade, while lowlights add darker strands to create depth and contrast. Many people have both together for a more dimensional, natural-looking finish.
Do I really need an allergy alert test if I have coloured my hair for years?
Yes. Sensitivities to hair dye can develop over time with repeated exposure, so a test is recommended before each colour service even if you have never reacted before. It protects you and is standard good practice.
Will lowlights damage my hair?
Lowlights are generally gentler than all-over colour because they use deposit-based darker shades rather than heavy lightening. Any colour service can affect condition, so a good stylist will assess your hair and recommend conditioning care.
How often will I need to have them redone?
Most people refresh lowlights every six to eight weeks, though softer, blended techniques can be left longer. Your stylist can suggest an interval based on your hair growth and the look you want.
Can lowlights cover grey hair?
Lowlights can help blend and soften grey by adding depth, but they are not usually designed for full grey coverage. If you want complete coverage, discuss a permanent colour option with your stylist.
This guide is general information, not medical advice. Speak to a qualified practitioner, and to your GP if you have a medical condition, before booking.