Can I colour my hair after a keratin treatment?

Usually yes, but the timing matters. Tell your stylist when you had your keratin treatment, and they'll advise how long to wait and how to plan the colour so your hair stays healthy.

Can I colour hair after smoothening or straightening?

Often yes, but hair that has been smoothed or straightened needs gentle handling. Your stylist will check your hair's condition first and may suggest Olaplex or a gentler formula.

Will colour affect my keratin results?

Colouring can affect how a smoothing treatment looks and wears, which is why planning the order of services matters. Discuss both treatments together at your consultation.

Hair Treatments

Hair Colour After Keratin: Can You Colour Hair After Keratin or Smoothening?

Q: Should I colour before or after keratin?

Many stylists prefer to colour first and smooth afterwards, as smoothing treatments can affect how fresh colour looks. Your stylist will recommend the best order for your hair and your goals.

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By Xing Salon TeamPublished 7 Nov 20267 min read

Styling stations at Xing Premium Unisex Salon, Sarjapur Road, where stylists plan hair colour after keratin

In this article

Why the Order of Services Matters
Hair Colour After Keratin: Colour First or Smoothing First?
How Long Should You Wait?
Colouring Hair That's Already Smoothed
Smoothing Hair That's Already Coloured
Planning Both Services: An Example
Protecting Hair That's Coloured and Smoothed
Henna and Home Colour
Signs Your Hair Needs a Break
What to Tell Your Stylist
Keeping Both Results Looking Their Best
Common Mistakes
Plan Your Colour and Smoothing in Bangalore

Smooth, frizz-free hair and a fresh new shade often go hand in hand. But if you've recently had a smoothing treatment, or you're planning one, you might be wondering whether you can colour your hair too, and in what order. Getting hair colour after keratin or smoothening is usually possible. The key is planning the order and spacing of your services with your stylist.

This guide explains why the order matters, the general principles stylists follow, how to protect hair that's both coloured and smoothed, and what to tell your stylist at your consultation.

Why the Order of Services Matters

Both colour and smoothing treatments work on your hair's structure. Done carelessly or too close together, they can:

Affect how your colour looks or how long it lasts
Affect how your smoothing treatment looks and wears
Put extra stress on your hair, leaving it dry or fragile

Planned well, you can enjoy both: smooth, manageable hair and colour you love.

Hair Colour After Keratin: Colour First or Smoothing First?

There's no single rule for everyone, but there are common principles.

Why many stylists colour first

Many stylists prefer to colour first and smooth afterwards. Smoothing treatments can affect how fresh colour looks, so doing the colour first lets your stylist see the true shade before smoothing.

When the order might change

Your stylist may plan differently if:

Your colour is just a root touch-up
Your hair has recently been smoothed and needs a break
You're making a big colour change that needs lightening
Your hair is already fragile from previous treatments

The right order depends on your hair, your colour plans and your treatment. That's why a consultation matters.

How Long Should You Wait?

Timing depends on the treatment, your hair's condition and the colour you want. Rather than guessing, tell your stylist exactly when you had your last colour or smoothing treatment. They'll advise how long to wait before the next service and plan the gap that's safest for your hair.

As a general habit:

Don't book colour and smoothing on the same visit unless your stylist recommends it.
Leave time between services so your hair can recover.
Plan ahead for events. If you have a wedding or big occasion, schedule both services well in advance.

Colouring Hair That's Already Smoothed

If you've already had keratin, smoothening or straightening and now want colour:

Tell your stylist everything: what treatment you had, when, and any previous colour.
Expect a condition check. Your stylist will look at how your hair feels before choosing a colour approach.
Consider a gentler option. Ammonia-free colour may suit some clients who colour often.
Add Olaplex. It helps protect and strengthen hair during colouring. At Xing, you can add an Olaplex top-up to any hair colour service.

Smoothing Hair That's Already Coloured

If your hair is coloured and you want keratin, smoothening or another treatment:

Mention all colour, including highlights, balayage and any lightening.
Lightened hair needs extra care. Highlights and balayage leave hair more porous and fragile.
Your stylist may suggest a repair step first, such as an Olaplex Hair Spa, if your hair is weak.

Our comparison of keratin vs smoothening vs straightening explains which smoothing treatment suits which hair.

Planning Both Services: An Example

Here's how a stylist might plan both, as a general illustration. Your own plan will depend on your hair:

Consultation: discuss your colour goals and smoothing goals together.
Colour appointment: your new shade, with Olaplex if lightening is involved.
Gap: time for your hair to settle, as advised by your stylist.
Smoothing appointment: keratin, smoothening or another treatment.
Maintenance: regular hair spas, root touch-ups and a colour-safe, sulphate-free routine.

Protecting Hair That's Coloured and Smoothed

Hair that has had both colour and smoothing needs gentle, consistent care.

Use the right shampoo

A sulphate-free, colour-safe shampoo protects both your colour and your treatment. It's the most important product change you can make.

Watch the water temperature

Wash with cool or lukewarm water. Hot water fades colour and wears smoothing treatments down faster.

Always use heat protectant

Smooth hair needs less heat to style. Use a heat protectant every time and keep tools on a lower setting.

Book regular hair spas

A hair spa every few weeks keeps coloured, smoothed hair soft and nourished. An Olaplex Hair Spa or Olaplex add-on helps if your hair has been lightened.

Protect from sun and chlorine

Strong sun and chlorinated water can fade colour and dry out treated hair. Cover up and rinse after swimming.

Our keratin aftercare guide and Olaplex guide cover these habits in more detail.

Henna and Home Colour

If you've used henna or a box colour at home, tell your stylist before any salon colour or smoothing treatment. Home products can sit on the hair differently from salon colour and can affect how a new colour or treatment takes. Your stylist may want to check your hair first, or do a strand test, before going ahead.

Signs Your Hair Needs a Break

Sometimes the kindest thing is to pause before the next chemical service. Watch for:

Hair that feels rough, straw-like or stretchy when wet
Ends that split or snap easily
Colour that fades very quickly
A scalp that feels tender or irritated

If you notice these, ask your stylist about a repair-focused hair spa, such as an Olaplex Hair Spa, before booking more colour or smoothing. Healthy hair holds colour better and responds better to smoothing treatments.

What to Tell Your Stylist

Be as specific as you can at your consultation:

Which smoothing treatment you had (keratin, smoothening, straightening, nanoplastia or another)
When you had it
Any colour, highlights, balayage or lightening, and when
Any home colour or henna
Any scalp sensitivity, allergies or pregnancy
The colour and finish you want next

The more your stylist knows, the better they can plan both services safely.

Keeping Both Results Looking Their Best

Once your colour and smoothing are done, the goal is to protect both. A colour-safe, sulphate-free shampoo does double duty, protecting your shade and your treatment. Wash with lukewarm water, use a heat protectant every time, and book a hair spa every few weeks. When your roots grow in, a root touch-up refreshes your colour without recolouring your smoothed lengths again. Your stylist will advise how to time it, so your colour and your smooth finish both stay fresh for as long as possible.

Common Mistakes

Booking colour and smoothing back to back without talking to your stylist.
Not mentioning previous treatments, especially home colour or henna.
Going straight back to a regular shampoo after colour and smoothing.
Skipping heat protection because styling is quicker.

Plan Your Colour and Smoothing in Bangalore

You can usually enjoy both smooth hair and fresh colour. The key is planning the order and spacing with your stylist, protecting your hair with Olaplex and regular spas, and switching to gentle, colour-safe care at home.

Book a consultation for your keratin or smoothening treatment and colour together at Xing Premium Unisex Salon in Sarjapur Road, HSR Layout or Brookfield. Tell us your hair history on WhatsApp and we'll help you plan.

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