Professional Services

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KERATIN STRAIGHTENING

Australia's #1 Hair-Smoothing

Treatment For Silky, Frizz-Free hair

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Professional Straightening Services

Premium Keratin Straightening

Premium Keratin Straightening

Terre a Mer’s Signature Keratin delivers 5–6 months of frizz-free, straight/smooth, shine & strength in just 2½+ hours. Powered by real keratin amino acids, shea butter, wheat protein, sericin and industry leading glyoxyloyl carbocysteine — 100% formaldehyde-free, backed by 30,000+ clients & our 30-day Happy Hair Guarantee

Results up to 6 months (most time longer) - 2.5 hour service for short hair.

From $500 for short hair (normal density)
For anyone who wants long-lasting smooth, shiny, and frizz-free hair with straighter results. This premium service is best suited for those looking for a transformational smoothing treatment that reduces styling time and keeps hair sleek, manageable, and polished for up to 6 months.
One Appointment, Long-Lasting Results
Achieve silky, straight, and frizz-free hair in a single session.
Blow-drying time is reduced by at least half, making daily styling easier than ever. We call in the 10 minute morning.
No Downtime
You can style your hair immediately after the treatment. Put waves in your hair, Tie it back, clip it up, or leave it loose — no waiting needed.
Same-Day Colour
Great to get just before holidays or a big event.
They are very similar and you cannot go wrong with either but you are reading this wanting to choose.

If you want sleek, polished, frizz-free hair with reduced volume and easier styling, Keratin Treatment is the premium choice. If your goal is maximum straightening plus deep repair, especially for resistant or coarse textures, Nanoplasty is more suitable. Both deliver lasting smoothness — Keratin is best for those who love smooth but natural movement, while Nanoplasty is ideal for those seeking a stronger, straighter transformation with added hair health benefits.
Your keratin journey starts with a personalised consultation with one of our hair repair experts, who will assess your hair and scalp, review your hair history, and discuss your current care routine. This ensures your treatment is perfectly tailored to your needs.
We then apply our three-step keratin formula, designed to repair, smooth, and protect. Using heat activation, the treatment straightens and seals the cuticle, locks in essential moisture, and strengthens your hair from the inside out—leaving it silky, manageable, and frizz-free.
Enjoy results that last up to 6 months+ (It can last longer in certain circumstances)
(Appointment time at typically 2.5 hours for short hair - 3 hours for medium and 3.5 hours for long) *Thicker hair adds time.
Keratin Amino Acids – These powerful protein fragments rebuild your hair from within, filling in gaps in the shaft to boost strength, elasticity, and shine. Heat sealing bonds them to the cuticle, creating a smooth, protective shield that keeps hair healthy, frizz-free, and effortlessly manageable.
Shea Butter – Packed with vitamins A and E plus essential fatty acids, shea butter delivers deep hydration and softness. It smooths the cuticle, tames frizz, and forms a heat-protective barrier during the treatment, leaving hair nourished, silky, and long-lastingly smooth.
Glyoxyloyl Carbocysteine – This advanced smoothing agent reshapes hair by softening and realigning its natural bonds. With heat activation, it locks in a straighter, frizz-free finish that’s sleek, manageable, and stays that way for months.
Maintain Your Results Longer
With proper aftercare, your Terre a Mer Keratin Treatment can last 6 months or more. We stand behind our work with a 30-day Happy Hair Guarantee! (but you must use the aftercare)
Use the Right Shampoo — Skip Sodium Chloride
Always wash your hair with Terre a Mer’s sodium chloride-free shampoo. Sodium chloride although effective and safe, can weaken the treatment layer on the hair will bring frizz back sooner.
Limit Washing
Shampooing too often can strip away the treatment faster. Try to wash your hair sparingly— up to 2 times a week—to preserve smoothness and shine.
Be Cautious with Water Exposure
For the first week after your treatment, avoid swimming pools and open water (like the ocean). Chlorine, salt, and minerals can degrade the keratin seal and shorten the lifespan of your treatment.
How long does the treatment last?
Results typically last between 4 to 6 months, depending on your hair type, lifestyle, and aftercare routine. Some clients report results last longer when they carefully care for their hair. We provide a happy hair guarantee for 30 days.
Is the treatment safe and free of formaldehyde?
Yes, the Terre a Mer Keratin Treatment is 100% formaldehyde-free and free from harsh chemicals. It uses natural, sustainably sourced ingredients like keratin amino acids, glyoxyloyl carbocysteine, and shea butter to nourish and strengthen hair.
Who is this treatment suitable for?
This treatment is great for anyone looking to straighten curl and frizz, and improve the manageability of their hair and increase their hair health. It’s suitable for anyone who wants to straighten their hair.
What can I expect during the treatment process?
The treatment includes an initial consultation to assess your hair and scalp health and discuss your hair history and care routine. It’s a three-step process: cleansing, applying the keratin formula, and sealing with heat to lock in the treatment. The entire process starts from about 210 minutes.
What if I’m unsure if this treatment is right for me? Can I decide during my appointment?
Absolutely! During your initial consultation, we’ll discuss your hair’s needs and your desired results. If at that point you decide the treatment isn’t right for you, we can recommend alternative options or adjust your service accordingly.
Is the treatment suitable for damaged hair?
Yes! The treatment is designed to repair and strengthen damaged hair, improving elasticity, shine, and manageability. However, if your hair is extremely compromised, we may recommend starting with a restorative treatment first.
Will the treatment make my blonde hair turn yellow?
No, the treatment is safe for blonde hair. Our experts vary the temperature during the ironing phase which ensures your colour remains safe. For best results, we recommend using a sulfate-free, color-safe shampoo after treatment and recommend a colour refresh during the treatment appointment if you require colour.