Keratin Complex NZ: Which Products Suit Your Hair?
Quick answer: If you only buy one Keratin Complex product, make it the Keratin Obsessed Treatment Spray 148ml. It's a lightweight leave-in that suits almost every hair type and acts as a heat protectant too. Then pair it with the shampoo and conditioner that match your hair: Care for keratin-treated hair, Colour Care for coloured hair, Blondeshell for blondes, Hydrate for dry hair and Volume Amplifying for fine hair.
Keratin Complex is an American professional haircare brand best known for salon smoothing treatments. Its home care range is built to keep that smooth, frizz-free result going between salon visits, but you don't need to have had a treatment to use it. This guide sorts every Keratin Complex range we stock at Zilion by hair type and need, so you can build a routine that actually suits your hair.
Why Keratin Complex?
The whole range is designed around one idea: topping up the hair with keratin protein while cleansing gently. The shampoos we stock are described as sulfate-free and sodium chloride (salt) free, which is the key thing to look for if you've had a salon keratin smoothing treatment, because harsh salts and sulfates can shorten how long a treatment lasts. Most formulas also combine keratin with wheat and soy proteins, so they're a good fit for hair that has been weakened by colour, bleach or heat styling.
The honest trade-off is that this is a protein-focused range. If your hair is already protein-rich and starts to feel stiff, straw-like or rough, you may need to balance it with a more moisture-focused product, such as the Hydrate range or the Vanilla Bean Conditioner, rather than using protein-heavy products at every step. Sulfate-free shampoos also lather less than you might be used to, which is normal.
An in-depth look at the Keratin Complex range
The home care range is organised into shampoo and conditioner pairs, each targeting a different hair need, plus a set of leave-in treatments, masques and styling products.
- Care: the core smoothing maintenance range for keratin-treated or damaged hair.
- Colour Care: for colour-treated hair, with UV protection listed in the product details to help reduce fading.
- Blondeshell: violet-pigmented shampoo, Debrass conditioner and masque to tone brassiness in blonde, silver and grey hair.
- Hydrate: moisture-focused care for dry, depleted hair, with aloe leaf juice.
- Volume Amplifying: lightweight care for fine, flat hair, using rice and soy proteins.
- Timeless Color-Defy: colour care with provitamin B5 and an antioxidant blend.
- Treatments and styling: Keratin Obsessed spray, Infusion Keratin Replenisher, KCSmooth Restorative Leave-in Lotion, IntenseRX Repair Serum, Picture Perfect Bond Sealing Masque, Kerabalm 3-in-1, and Flex and Firm Hold hairsprays.
Sizes: most shampoos and conditioners come in 400ml and 1000ml (the litre bottles suit long hair or a household sharing one range), and several treatments come in travel sizes, such as the Keratin Obsessed Mini 30ml. Bundles and gift sets are in our Keratin Complex Gift Sets & Packs collection.
Salon-only items: the Personalised Blow Out Treatment Kit and the Vitalshot Bond Rebuilder are listed as professional-use products. They're intended for trained stylists, so this guide focuses on the home care range.
Ingredient spotlight: what's inside Keratin Complex
These are the key ingredients named in the product details for the ranges we stock. Always check the full ingredient list on the packaging if you have allergies or sensitivities.
- Signature keratin (hydrolysed keratin): the backbone of every product. Keratin is the protein hair is made of, and it helps smooth the cuticle and strengthen the hair fibre.
- Wheat and soy proteins: found in the Care, Colour Care and Hydrate ranges, adding strength, moisture retention and shine.
- Rice protein: used with soy protein in Volume Amplifying for weightless body.
- Aloe leaf juice: in Hydrate Shampoo, for a soothing, moisture-binding cleanse.
- Provitamin B5 (panthenol): in Colour Care and Timeless Color-Defy for hydration and shine.
- Silk amino acids and coconut oil: in Keratin Obsessed, for softness and lightweight moisture.
- Acid Violet 43, chamomile extract and lavender oil: in Blondeshell Shampoo. The violet pigment is what neutralises yellow tones.
- Jojoba oil and vanilla bean fruit extract: in the Vanilla Bean Conditioner.
- PhytoFruit Blend: fruit acids and nutrients in the Picture Perfect Bond Sealing Masque.
Our top Keratin Complex picks
1. Keratin Obsessed Treatment Spray 148ml: best all-rounder
A lightweight, non-greasy leave-in spray with keratin, silk amino acids and coconut oil. It works as a frizz fighter, heat protectant and restorative treatment in one, so it can replace several products in your routine. Mist it through damp hair before blow-drying or flat ironing.
Who it's for: almost everyone, especially frizz-prone hair and anyone maintaining a keratin treatment.
Honest note: keep it away from extension bonds or tapes, as the oils can cause slipping.
Shop Keratin Obsessed Treatment Spray →
2. Care Shampoo 400ml: best for keratin treatment aftercare
The core of the range: a sulfate-free, sodium chloride-free shampoo with hydrolysed keratin plus wheat and soy proteins. It's designed to cleanse gently without stripping a salon smoothing treatment. Follow with the Care Conditioner 400ml.
Who it's for: keratin-treated hair, and damaged or brittle hair that needs protein reinforcement.
Honest note: it gives a creamy, low lather rather than lots of suds, which is normal for sulfate-free formulas.
3. Colour Care Shampoo 400ml: best for colour-treated hair
Sulfate-free and salt-free like Care, but with provitamin B5 and UV protection listed in the product details to help colour stay brighter for longer. A good daily choice if you colour your hair and also want to control frizz. Pair it with the Colour Care Conditioner 400ml.
Who it's for: coloured, highlighted or chemically processed hair, particularly in humid coastal areas.
Shop Colour Care Shampoo 400ml →
4. Blondeshell Shampoo 400ml: best for brassy blondes
A violet-pigmented, sulfate-free shampoo that tones yellow and brassy hues while adding keratin to lightened hair. For stronger toning, leave it on for 1 to 3 minutes before rinsing. Follow with the Blondeshell Debrass Conditioner or the Blondeshell Debrass Masque.
Who it's for: bleached, highlighted, silver and grey hair.
Honest note: like any purple shampoo, rinse splashes off light-coloured tiles and grout straight away, and don't leave it on longer than you need to.
Shop Blondeshell Shampoo 400ml →
5. Hydrate Shampoo 400ml: best for dry hair
A moisture-rich, sulfate-free cleanser that combines keratin, wheat and soy proteins with aloe leaf juice. It's the range to choose if your hair feels dry or depleted from heat styling or chemical services. Finish with the Hydrate Conditioner 400ml.
Who it's for: dry, rough or unruly hair that needs softness as well as smoothness.
6. Volume Amplifying Shampoo 400ml: best for fine, flat hair
Keratin with rice and soy proteins to give fine hair body without weighing it down. It removes the excess oil that makes fine hair look flat, and it's sulfate-free and paraben-free, so it's still gentle on colour. Use it with the Volume Amplifying Conditioner 400ml.
Who it's for: fine, limp hair and oilier scalps, including keratin-treated hair that has gone a little too flat.
Shop Volume Amplifying Shampoo 400ml →
7. Timeless Color-Defy Shampoo 400ml: best for long-lasting colour care
A sulfate-free colour shampoo with keratin, provitamin B5 and an antioxidant blend. The directions suggest leaving it on for a minute before rinsing. It's an alternative to Colour Care for anyone who wants extra strength and shine from their colour routine. The matching Timeless Color-Defy Conditioner completes the pair.
Who it's for: colour-treated hair that's starting to feel weaker, duller or more prone to split ends.
Honest note: it isn't a heat protectant, so still use a heat spray before styling.
Shop Timeless Color-Defy Shampoo 400ml →
8. Picture Perfect Bond Sealing Masque 118ml: best weekly treatment
A deep-conditioning masque with keratin and a PhytoFruit Blend, designed to seal the cuticle, help lock in colour and balance pH after chemical services. Apply to damp hair, focusing on mid-lengths and ends, and leave for 5 to 10 minutes.
Who it's for: bleached, coloured or porous hair, and anyone wanting to extend a smoothing treatment.
Honest note: it's a rinse-out treatment, not a heat protectant, so follow with a leave-in before styling.
Shop Picture Perfect Bond Sealing Masque →
9. IntenseRX Repair Serum 45ml: best for heat-damaged ends
A concentrated, non-greasy leave-in serum with keratin, wheat protein and amino acids. It's designed for hair that has lost softness and shine from chemical processing and hot tools, and it adds a layer of heat protection. For extra smoothing, layer it with the Infusion Keratin Replenisher before blow-drying.
Who it's for: damaged, rough-feeling lengths and ends.
Honest note: a little goes a long way; too much can make fine hair feel heavy.
Shop IntenseRX Repair Serum 45ml →
Which Keratin Complex range suits your hair?
| Your hair or need | Our pick |
|---|---|
| Just had a keratin smoothing treatment | Care Shampoo and Conditioner |
| Coloured hair | Colour Care Shampoo and Conditioner |
| Brassy blonde, silver or grey | Blondeshell Shampoo and Debrass Conditioner |
| Dry or rough | Hydrate Shampoo and Conditioner |
| Fine or flat | Volume Amplifying Shampoo and Conditioner |
| Coloured hair that feels weaker or duller | Timeless Color-Defy Shampoo |
| Frizz and heat styling | Keratin Obsessed Treatment Spray |
| Bleached or porous, needs a weekly boost | Picture Perfect Bond Sealing Masque |
| Damaged ends | IntenseRX Repair Serum |
Routine guide: building a Keratin Complex routine
- Shampoo with the right range. Choose the shampoo for your main hair need, massage into wet hair and rinse. If you've just had a smoothing treatment, follow your stylist's advice on when to wash for the first time.
- Condition mid-lengths to ends. Use the matching conditioner and leave for a minute or two. Swap in the Picture Perfect Masque, or the Blondeshell Masque for blondes, once a week.
- Apply a leave-in to damp hair. Mist Keratin Obsessed through towel-dried hair, or use a small amount of the KCSmooth Restorative Leave-in Lotion if you prefer a lotion.
- Add a serum to damaged ends. A small amount of IntenseRX on the lengths, if needed.
- Blow-dry and style. Heat helps activate the leave-in products. Our guide to straighteners for keratin-treated hair covers the tools side.
- Finish with hold if you need it. The Flex Hold Styling Hairspray is there if you want flexible hold.
Key features to look for
- Sulfate-free and salt-free: essential if you've had a keratin smoothing treatment. Read more in how long does a keratin treatment last.
- The right protein balance: protein-rich products suit weak or damaged hair; if your hair feels stiff, lean on Hydrate or Vanilla Bean for moisture.
- Heat protection: Keratin Obsessed, Infusion, KCSmooth and IntenseRX list heat protection; the shampoos, conditioners and masques don't.
- Size: 400ml to try a range, 1000ml once you know it works for you.
- Matching pairs: each shampoo is designed to be used with its own conditioner. See our guide to the best conditioner for keratin-treated hair.
Our strategy for choosing the right Keratin Complex products
Start with your hair's main need and choose one shampoo and conditioner pair; that's where most of the everyday difference comes from. Add Keratin Obsessed as your leave-in, because it covers frizz and heat protection in one step. Only add a masque or serum once you know the basics are working. If you're buying a gift and don't know the person's hair, the Care range or Keratin Obsessed is the safest choice, and the Keratin Complex Care Gift Set makes an easy Christmas present.
FAQs
Do I need a keratin treatment to use Keratin Complex products?
No. The home care range is designed to maintain smoothing treatments, but the shampoos, conditioners and leave-ins can be used on any hair that wants smoothness, strength or frizz control.
Are Keratin Complex shampoos sulfate-free?
The shampoos we stock are described as sulfate-free and sodium chloride-free, which is why they're popular as aftercare for salon smoothing treatments.
What's the difference between Care and Colour Care?
Care focuses on smoothing and protein maintenance for all hair types. Colour Care adds provitamin B5 and UV protection to help coloured hair stay vibrant.
Can I use Keratin Complex on hair extensions?
The product details say yes for several products, but keep leave-ins and oil-containing treatments away from the bonds or tapes so they don't slip. Check with your extension stylist if unsure.
Shop Keratin Complex at Zilion
Browse the full range, including 1000ml sizes, bundles and gift sets, in our Keratin Complex collection, or compare other brands in our Smoothing & Keratin Treatments collection.
