Colour-Treated Hair Care: The Complete Guide

Freshly coloured hair has a particular kind of shine. The tone looks balanced, the surface feels smooth and even an ordinary blow-dry seems more polished.

Keeping it that way, however, takes more than avoiding a few washes.

Colour-treated hair has already been through a chemical process. Depending on whether your hair was permanently coloured, lightened, highlighted, toned or bleached, that process may have altered the outer cuticle and made the fibre more porous. This can leave the hair more vulnerable to dryness, roughness, tangling, breakage and gradual colour change. Research into hair-fibre structure has consistently found that chemical treatments, particularly bleaching and repeated oxidative colouring, can damage or remove parts of the cuticle.

That does not mean coloured hair must always feel damaged. It means your colour-care routine should reduce unnecessary stress while helping the hair remain smooth, conditioned and manageable.

This guide explains how to care for colour-treated hair in everyday Australian conditions, including frequent washing, heat styling, strong sunlight, swimming pools and beach days.

Why does colour-treated hair need different care?

A strand of hair has an outer layer called the cuticle. Its overlapping cells help protect the inner cortex and create a relatively smooth surface.

Permanent colouring and lightening generally require the cuticle to be altered so colour molecules can enter the hair or natural pigment can be removed. The more intensive the service, the greater the potential change to the hair fibre. Repeated bleaching, for example, can lead to noticeable cuticle loss and exposure of the cortex.

As a result, coloured hair may:

absorb and lose water more readily
feel rough when wet
tangle more easily
become harder to style
look duller as the surface becomes uneven
fade or shift tone between salon appointments
break more easily when brushed or heat styled

Your routine cannot permanently reconstruct a severely damaged strand. Hair outside the scalp is not living tissue. What good hair care can do is reduce friction, improve surface smoothness, support moisture retention and make the hair easier to handle. Conditioning products are especially useful because they can reduce friction and help protect weakened cuticle surfaces from further mechanical damage.

What makes a shampoo suitable for coloured hair?

A colour-safe shampoo should clean the scalp effectively without leaving the lengths unnecessarily rough, tangled or stripped.

Importantly, the term colour-safe is not defined by one ingredient alone. A shampoo should be assessed by its complete formula, including:

the combination and concentration of cleansing agents
the amount of product used
how often it is used
the presence of conditioning ingredients
the hair’s existing porosity and condition
whether the shampoo is applied mainly to the scalp or repeatedly scrubbed through the ends

This is why “sulphate-free” should not be treated as the only sign of a good colour-care shampoo. Some sulphate-free formulas may still cleanse strongly, while a carefully balanced formula containing a sulphate may work well for a particular person.

The more practical test is how the hair behaves after washing. A suitable shampoo should leave the scalp clean while the lengths remain reasonably soft, untangled and manageable.

Recommended for your colour-care routine

CRAFT Colour System Shampoo for colour-treated hair

Want a shampoo that cleans without leaving coloured hair feeling stripped?

Colour-treated hair still needs a properly cleansed scalp, especially after exercise, styling products or several days between washes. The CRAFT Colour System Shampoo is designed to remove everyday oil and buildup while helping coloured, highlighted and toned hair remain soft and manageable. Rather than relying on a single “colour-safe” label, its complete formula combines cleansing agents with Olive Fruit Oil, Aloe Vera, Panthenol and smoothing ingredients to support the hair during the wash.

Cleans away everyday oil, sweat and styling-product residue without treating coloured lengths like untreated hair
Olive Fruit Oil and Aloe Vera help coloured hair feel softer and less rough after washing
Panthenol and Dimethiconol support smoothness, shine and everyday manageability
Suitable for coloured, highlighted, toned and bleached hair as part of a regular wash-day routine

Shop the shampoo Pair with conditioner

Apply shampoo where it is needed

Most oil, sweat and product buildup accumulate on the scalp and around the roots. Concentrate shampoo in this area rather than vigorously rubbing it through every centimetre of hair.

As you rinse, the lather will move through the mid-lengths and ends. This is usually enough for routine cleansing unless the lengths have heavy styling-product, chlorine or mineral buildup.

Using this approach can help you clean the scalp properly without giving fragile ends more handling than they need.

How often should you wash colour-treated hair?

There is no universal wash schedule for coloured hair.

Washing less frequently can reduce the number of times the hair is exposed to water, cleansing and manipulation. However, stretching wash days too far can leave some people with an oily, itchy or uncomfortable scalp, especially after hair colour services.

Your ideal frequency depends on:

how quickly your scalp becomes oily
exercise and sweating
hair thickness and texture
styling-product use
the type of colour
dandruff or scalp sensitivity
local weather and humidity

Some people may be comfortable washing two or three times a week. Others, particularly those with fine hair, active lifestyles or oily scalps, may need to wash more often.

The goal is not to keep the hair unwashed for as long as possible. It is to find the least frequent schedule that still keeps your scalp clean and comfortable.

Between washes, avoid layering large amounts of dry shampoo day after day. Dry shampoo can be helpful occasionally, but it absorbs oil rather than removing sweat, skin cells and product residue.

The best colour-care routine

A useful routine does not need ten products. It needs a few well-chosen steps performed consistently.

Step 1: Follow your colourist’s post-service instructions

Advice about the first wash may vary according to the colouring method, toner and products used.

Instead of following a blanket online rule, ask your colourist:

when you should first shampoo
whether a toning product is needed
how often that toner should be used
whether your hair needs a treatment before the next appointment
which types of swimming or heat styling to avoid immediately afterwards

Using a purple or blue shampoo too soon or too frequently can leave some hair dry, dull or over-toned. These products should be used for a specific tonal reason, not simply because the hair is coloured.

Step 2: Wash with lukewarm water

Very hot showers can make already-dry hair feel rougher and may be uncomfortable for a sensitive scalp. Lukewarm water is a more practical choice for cleansing.

There is no need to finish every wash with icy water. A comfortable, slightly cooler rinse is enough if you prefer how it makes your hair feel.

Step 3: Cleanse the scalp gently

Wet the hair thoroughly before applying shampoo. Use enough product to clean the scalp, but do not assume that more foam means a better result.

Massage with your fingertips rather than scratching with your nails. Allow the lather to rinse through the lengths without bunching the hair into a tangled pile.

For regular colour maintenance, the Craft Colour System Shampoo can be used as the cleansing step. Its formula includes conditioning ingredients such as olive fruit oil, aloe vera, panthenol and dimethiconol alongside its cleansing blend.

Step 4: Condition the mid-lengths and ends

Conditioner is not an optional extra for most colour-treated hair. It helps reduce friction, improve detangling and create a smoother surface.

Apply it from the mid-lengths to the ends, concentrating on the most porous areas. Fine hair may need only a small amount, while thick, long or heavily lightened hair may need more.

Leave it on for the time specified on the product, then rinse thoroughly.

The Craft Colour System Conditioner contains fatty alcohols, cationic conditioning agents and silicones designed to improve softness, slip and surface gloss. It also contains panthenol, aloe vera and olive leaf extract.

Recommended for softer, glossier colour-treated hair

CRAFT Colour System Conditioner for colour-treated hair

Does your colour still look good, but your hair no longer feels salon-smooth?

Colour can begin to look flat before the shade itself has noticeably faded. When the surface of the hair becomes rough, it reflects less light and the lengths may feel dry, tangled or difficult to style. The CRAFT Colour System Conditioner is the smoothing step of the routine, helping reduce surface roughness and restore the softness, slip and glossy finish that processed hair often loses between salon appointments.

Conditioning agents help smooth rough areas and make coloured lengths easier to detangle
A four-silicone smoothing blend supports slip, softness and a more light-reflective finish
Panthenol, Aloe Vera and Olive Leaf Extract help maintain a softer, more conditioned feel
Applied through the mid-lengths and ends, where colour-treated hair usually needs the most support

Shop the conditioner Complete the routine

Step 5: Remove water without rough rubbing

Wet hair is easier to stretch and damage, especially when it is bleached or highly porous.

Rather than scrubbing with a towel:

Gently squeeze out excess water.
Blot or wrap the hair with a soft towel.
Detangle carefully, starting at the ends.
Use a wide-tooth comb or a brush suitable for wet hair.
Avoid repeatedly pulling through knots from the roots.

A leave-in conditioner or detangling product can help when the ends remain difficult to manage.

Step 6: Protect before heat styling

Hair dryers, straighteners and curling tools expose the fibre to additional heat. Colour-treated hair may have less tolerance for repeated high-temperature styling, particularly after bleaching.

Use a heat-protectant product and choose the lowest temperature that produces the result you need. Keep the dryer moving rather than holding it in one place, and avoid running straighteners over the same section repeatedly.

Whenever practical, alternate heat-styled days with lower-heat or air-dried styles.

How to prevent hair colour from fading

Colour change is not caused by one habit. Washing, sunlight, heat, water exposure, the original dye and the condition of the hair can all influence how the colour looks over time.

Protect coloured hair from the Australian sun

UV exposure can affect both the proteins and pigments within hair. Research has associated UVB exposure with protein loss and UVA exposure with colour changes. Chemically treated and naturally light hair may show visible changes more readily.

For long periods outdoors:

wear a wide-brimmed hat
keep long hair tied or covered
sit in the shade when possible
use a hair product specifically labelled for UV protection
avoid leaving wet, salty hair exposed to the sun for hours

This is especially relevant during Australian summers, beach holidays, outdoor sport and long days around the pool.

Do not apply ordinary skin sunscreen through the hair unless the product is specifically suitable for that use. For exposed scalp parts or thinning areas, use a scalp sunscreen or wear a hat.

Reduce unnecessary heat

Heat can make dry, porous hair feel progressively rougher and may affect the way colour reflects light.

A faded-looking result is not always caused by pigment leaving the hair. Sometimes an uneven, dehydrated surface reflects less light, making the colour appear flat. Improving conditioning and reducing repeated high heat can restore a more polished appearance even when the underlying shade has not dramatically changed.

Prepare hair before swimming

Pool water, repeated wetting and chlorine exposure can leave coloured hair feeling dry or change the appearance of some shades. Lightened hair may also pick up unwanted tones when metals in pool water deposit on the fibre.

Before swimming:

wet the hair thoroughly with fresh water
apply a small amount of leave-in conditioner if suitable
wear a well-fitting swimming cap
avoid entering the pool with heavily tangled hair

After swimming, rinse promptly with fresh water and follow with gentle cleansing and conditioner when needed.

Do not repeatedly use strong clarifying or chelating shampoos “just in case”. These products are useful for genuine buildup, but frequent use may be too drying for highly processed hair. Ask your colourist whether a chelating treatment is appropriate if your blonde hair develops a persistent green, dull or mineral-coated appearance.

Be careful with salt water

Salt water does not automatically ruin hair colour, but repeated beach days can combine salt, wind, sun, tangling and dehydration.

Rinse after swimming, condition the lengths and avoid brushing windblown hair aggressively. A plait, bun or protective style can reduce tangling while you are outdoors.

Caring for different types of coloured hair

Bleached, blonde or highlighted hair

Lightened hair is often more porous than hair that has only had colour deposited.

Prioritise:

consistent conditioning
gentle detangling
controlled heat
sun protection
occasional toning only when required
professional advice before further bleaching

Purple shampoo helps manage yellow tones; it does not repair structural damage. Using it more often than necessary may make some hair feel dry or appear dull.

Red, copper and vivid shades

Red, copper, pink, blue and other vivid tones may show fading quickly because even a modest colour change is highly visible.

Reduce unnecessary washing, use a colour-appropriate cleanser and ask your colourist whether a pigmented conditioner is suitable. Be careful with white towels, pillowcases and clothing during the first washes, as some colour transfer may occur.

Brunette and black hair

Darker colour can lose shine or develop warm undertones as it changes.

Focus on surface smoothness and gloss rather than repeatedly applying darker dye through the full length. Your colourist may recommend refreshing the roots separately and using a gloss or toner through the ends.

Balayage and ombré hair

Balayage often combines relatively untreated roots with lightened, porous ends.

This means one routine must manage two different areas:

cleanse the scalp and roots properly
apply richer conditioning mainly to the lightened lengths
avoid weighing down the root area
protect the ends from heat and friction

Looking after your scalp without sacrificing your colour

Colour care should not come at the expense of scalp comfort.

Do not ignore persistent oiliness, itching, flakes, burning or tenderness simply because you are trying to wash less frequently. The scalp is skin and may require a different strategy from the coloured lengths.

Optional pre-shampoo step for buildup-prone scalps

BioScalp Scalp Cleanser pre-shampoo scalp treatment

Stretching your wash days but noticing more oil, dry shampoo or buildup at the roots?

Washing coloured hair less often can reduce unnecessary handling, but it can also mean more oil, sweat and styling residue accumulating around the scalp. The BioScalp Scalp Cleanser is an optional pre-shampoo step for buildup-heavy wash days. Applied directly to the scalp before shampooing, it helps lift away residue at the roots without requiring you to repeatedly scrub the more fragile mid-lengths and ends.

Used before shampoo to give oily or product-laden roots a more thorough cleanse
Tea Tree Oil helps clarify, while Black Oat Seed Extract and Aloe Vera support scalp comfort
Panthenol, glycerin and lecithin provide conditioning support alongside the cleansing step
Applied to the scalp rather than the coloured lengths, helping keep the routine targeted

Shop the scalp cleanser Follow with colour shampoo

A practical approach is to treat the two areas separately:

choose shampoo according to the scalp’s cleansing needs
apply it mainly to the roots
choose conditioner according to the condition of the lengths
keep conditioner away from an oily or flake-prone scalp unless directed otherwise
use targeted scalp products only where they are needed

A pre-shampoo scalp cleanser may be useful occasionally when there is substantial oil or product buildup. It should not automatically be added before every wash, especially when the scalp or coloured lengths already feel dry.

Daily leave-in care for the scalp

BioScalp Advanced Scalp Tonic daily leave-in scalp care

Caring for your coloured lengths—but forgetting about the skin underneath?

Shampoo and conditioner mainly do their work during wash day, but scalp care does not have to end when you rinse. The BioScalp Advanced Scalp Tonic is a lightweight leave-in step applied directly to a clean, towel-dried scalp. It allows you to support scalp hydration and balance without applying extra oils or heavy conditioning products through freshly coloured lengths.

Lightweight, leave-in formula designed for direct application to the scalp rather than the hair lengths
Niacinamide, Panthenol and glycerin help support hydration and everyday scalp comfort
Ginseng, Burdock Root, biotin and amino acids provide additional cosmetic scalp and hair support
Salicylic Acid and Zinc Gluconate help maintain a clearer, more balanced-feeling scalp

Shop the scalp tonic View the pre-cleanse step

Common colour-care mistakes

Even a good product routine can be undermined by everyday habits.

Common mistakes include:

choosing products only because they say “sulphate-free”
using purple shampoo at every wash
applying shampoo heavily through dry ends
skipping conditioner because the roots become oily
washing too infrequently despite scalp discomfort
styling at the highest possible temperature
swimming without rinsing afterwards
rough towel drying
overlapping bleach onto previously lightened hair
expecting a shampoo to reverse severe chemical damage

When hair remains brittle, gummy when wet, unusually elastic or breaks in short pieces, adding more cosmetic products may not be enough. Speak with an experienced colourist before arranging another chemical service.

When should you seek professional advice?

Contact your colourist when:

the tone changes unexpectedly
the hair develops a green, orange or muddy cast
breakage increases after a service
the ends feel severely rough or elastic
you are considering overlapping colour, bleach, a perm or chemical straightening

Speak with a GP or dermatologist if you experience ongoing scalp inflammation, blistering, weeping, severe itching, pain or unusual hair loss after colouring.

Hair dyes can trigger irritant or allergic contact reactions. Symptoms can include burning, itching, rash, tightness, soreness and blisters, and reactions may develop after previous colour services that caused no problem. Follow the patch-testing and application directions provided with every home-colour product.

Swelling of the lips, tongue, face or throat, difficulty breathing, wheezing, dizziness or collapse may indicate a severe allergic reaction. In Australia, call Triple Zero on 000 for emergency assistance.

Frequently asked questions

What is the best shampoo for colour-treated hair?

Choose a shampoo that cleans your scalp without leaving the lengths excessively dry, rough or tangled. Look at the complete formula and how your hair responds rather than relying only on claims such as “sulphate-free”.

How often should you wash coloured hair?

Wash according to your scalp’s needs. For some people this is two or three times a week; others need more frequent cleansing. Avoid stretching wash days so far that the scalp becomes oily, itchy or uncomfortable.

Does washing with cold water stop colour fading?

Cold water cannot completely prevent colour loss. Lukewarm water is a comfortable, sensible option that avoids the drying feel associated with very hot showers. Washing technique and frequency generally matter more than an icy final rinse.

Can I swim with freshly coloured hair?

Ask your colourist how long to wait because the recommendation may depend on the service. When you return to swimming, wet the hair with fresh water first, consider a swim cap and rinse thoroughly afterwards.

Can colour-treated hair become healthy again?

Its appearance and manageability can improve considerably with conditioning, less friction and reduced heat. However, severely damaged portions of the hair shaft cannot biologically heal. Sometimes the most effective long-term solution is a combination of careful maintenance and gradual trimming.

Build a routine that protects both colour and condition

Good colour care is not about treating your hair as something too fragile to wash, brush or enjoy.

It is about removing avoidable stress. Clean the scalp when it needs cleansing. Condition the areas that feel dry. Protect the lengths from excessive heat, sunlight, friction and swimming exposure. Most importantly, adjust the routine to your actual hair rather than following rigid rules from someone with a completely different scalp, colour service or lifestyle.

For a simple two-step routine, explore the Craft Colour System Shampoo and Conditioner Set, developed for coloured, highlighted and chemically processed hair. Use the shampoo primarily around the scalp and follow with conditioner through the mid-lengths and ends to support softness, shine and everyday manageability between salon appointments.