Cortex Beauty PURE KERATINE INTENSIVE HAIR SERUM
Cortex Beauty Pure Keratine Intensive Hair Serum
Cortex Beauty PURE KERATINE INTENSIVE HAIR SERUM
Cortex Beauty Pure Keratin | Intensive Hair Serum
Pure Keratin | Intensive Hair Serum — in a warm cream styling setting
Pure Keratin | Intensive Hair Serum — product detail on a warm cream surface
Cortex Beauty PURE KERATINE INTENSIVE HAIR SERUM
Cortex Beauty Pure Keratine Intensive Hair Serum
Cortex Beauty PURE KERATINE INTENSIVE HAIR SERUM
Cortex Beauty Pure Keratin | Intensive Hair Serum
Pure Keratin | Intensive Hair Serum — in a warm cream styling setting
Pure Keratin | Intensive Hair Serum — product detail on a warm cream surface

Pure Keratin | Intensive Hair Serum

$39.00
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Bring softness and shine to dry lengths with Cortex Beauty Pure Keratin Intensive Hair Serum. Keratin, argan oil, and silicone-based conditioning help smooth the appearance of split ends and leave hair with a glossy finish and a delicate scent.

Features & Benefits

  • Pure keratin protein supports the feel of stronger, smoother hair.
  • Natural argan oil nourishes dry, damaged lengths.
  • Silicone-based conditioning helps retain moisture and smooth the hair surface.
  • Helps soften the look of frizz and split ends.
  • Protective conditioning supports hair exposed to sun, heat styling, or chemical treatments.
  • Delicate fragrance complements the finishing step.

Free U.S. shipping on orders over $50 USD after discounts and before tax. Shipping details.

We do not accept returns for a refund. Exchanges are available for damaged or defective units (for example, a tool that stops working) bought from cortexbeauty.com or any authorized retailer and still within our 2-year warranty. Start a chat at the bottom of the page with your order number and photos. Approved replacements require a $24.95 shipping, handling and processing fee. Exchange policy.
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Key ingredients

Silky cream and gold strands representing keratin protein.

Keratin

Smooths rough spots on the surface of the hair for a sleeker finish.

Golden argan oil with argan stones and kernels on a warm cream background.

Argan oil

A light oil that softens dry ends and adds shine without weighing hair down.

Pure Keratin | Intensive Hair Serum — in a warm cream styling setting
Glossy cream liquid swirl representing conditioning agents.

Silicone blend

Seals the cuticle for instant gloss and helps protect from heat styling.

Nourishing Ingredients

Macadamia & sea buckthorn oils

Lightweight oils that tame flyaways and soften ends.

What it does for your hair

Keratin Support

Pure keratin protein supports the feel of stronger, smoother hair.

Nourishing Argan Oil

Natural argan oil nourishes dry, damaged lengths.

Softens Frizz and Ends

Helps soften the look of frizz and split ends.

Protective Conditioning

Supports hair exposed to sun, heat styling or chemical treatments.

Your routine in 4 steps

Each step is made to work with the others in this line.

Step 1 · CleansePure Keratin | Intensive ShampooPure KeratinIntensive Shampoo $49
Step 2 · ConditionPure Keratin | Intensive ConditionerPure KeratinIntensive Conditioner $49
Step 3 · Treat (weekly)Pure Keratin | Intensive Hair MaskPure KeratinIntensive Hair Mask $49
You're hereStep 4 · FinishPure Keratin | Intensive Hair SerumPure KeratinIntensive Hair Serum $39

Want the whole routine? Mix any of these in Build Your Routine and save more as you add.

Build your routine
Pro Slim | 1" Temperature Control Flat Iron
Pair it with a tool

Pro Slim 1" Temperature Control Flat Iron

Smooth a drop of serum through dry lengths, then flat iron with the Pro Slim. Pick the lowest heat that works for you. The slim 1-inch plates help around the hairline and short layers.

$79

Shop the tool

How to use

1

Start Small

Use a small amount on clean hair.

2

Smooth Through

Work it through lengths and ends.

3

Style as Usual

Finish your style as you normally would.

Which line is right for your hair?

Three routines, three different jobs. Pick the one that matches what your hair needs most.

Pure Keratin | Intensive ShampooPure KeratinYou're viewing
Best for
Frizzy, heat-styled or keratin-treated hair
Dry, thirsty hair that feels rough
Color-treated or chemically straightened hair, and scalps that need balance
Your hair after
Smooth, sleek and glossy
Soft, bouncy and hydrated
Light, static-free and easy to manage
Hero ingredients
Keratin + argan oil
Hyaluronic acid (ResistHyal) + shea butter
Keratin + argan oil + milk protein
Shampoo formula
Salt-free
Salt-free
Sulfate- and sodium-free
The routine
Shampoo, conditioner, mask, serum
Shampoo, conditioner, mask, serum
Shampoo, mask, serum