Keratin Hair Care: Volume, Breakage, Frizz & How to Use It
Published: Lueur BeautéShare
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Keratin hair care is often marketed as a way to make hair stronger, smoother and shinier — but not every keratin product works in the same way, and it is easy to overstate what topical keratin can do.
This guide focuses specifically on keratin for volume, breakage, frizz and manageability, without repeating the broader Hair Care Guide or the separate glossy-hair article.
What Is Keratin?
Keratin is a structural protein found naturally in hair.
In cosmetic formulas, Hydrolyzed Keratin is used as a conditioning ingredient that can help improve the feel, smoothness and manageability of damaged or fragile hair.
It should not be described as rebuilding the hair permanently from the inside or replacing lost keratin in a permanent way.
What Can Hydrolyzed Keratin Do in Hair Care?
In a well-formulated rinse-off or leave-in product, Hydrolyzed Keratin can help:
- support a smoother hair surface
- improve manageability
- reduce the appearance of frizz
- support the feel of stronger, more resilient hair
- help reduce breakage during styling and detangling
The exact result depends on the complete formula, how damaged the hair is and how the product is used.
Keratin for Volume: Why Formula Weight Matters
Fine or flat-looking hair often needs a balance between conditioning and lightness.
Too much heavy conditioning can make hair feel softer but visually flatter, while a lighter keratin-based formula can support smoothness without overwhelming the hair.
This is why volume-focused keratin products are formulated differently from intensive smoothing or repair treatments.
Keratin Volume Boost Shampoo
Lueur Beauté Keratin Volume Boost Shampoo is designed for hair that lacks volume and fullness.
Its highlighted ingredients include:
- Hydrolyzed Keratin
- Caffeine
- Rosemary Oil
- Sodium PCA
- Chanterelle Extract
The formula is designed to gently purify the hair while helping create a fuller-looking, softer and smoother finish and helping protect against breakage.
It is COSMOS NATURAL certified by ECOCERT Greenlife, with 99% ingredients of natural origin and 4% of organic origin.
It is Gluten Free and Nut Free.
Important: a Vegan claim is not stated in the current product information, and the formula contains Hydrolyzed Keratin.
It is not fragrance-free.
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Keratin Volume Boost Conditioner
Keratin Volume Boost Conditioner is designed to smooth and detangle while enhancing fullness.
Its highlighted ingredients include:
- Hydrolyzed Keratin
- Rosemary Oil
- Caffeine
- Sodium PCA
- Vitamin E
The formula is designed to help protect against breakage and frizz while improving softness, smoothness and manageability.
It is COSMOS NATURAL certified by ECOCERT Greenlife, with 98% ingredients of natural origin and 7% of organic origin.
It is Gluten Free.
Important: a Nut Free claim is not stated for this conditioner, and the INCI contains Sweet Almond Oil.
A Vegan claim is also not stated, and the formula contains Hydrolyzed Keratin.
It is not fragrance-free.
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How to Use the Keratin Volume Duo
A simple routine is:
Keratin Volume Boost Shampoo → Keratin Volume Boost Conditioner
Massage the shampoo into wet hair, lather and rinse thoroughly.
Apply the conditioner to damp hair, focusing on the mid-lengths and ends, then rinse thoroughly.
The current product information does not state a fixed conditioner leave-on time or a mandatory usage frequency.
What About Keratin Leave-In Products?
A leave-in can be useful when the main concerns are frizz, breakage, tangling or lack of shine after washing.
Keratin Shine Leave-In Hair Mist
Keratin Shine Leave-In Hair Mist contains Hydrolyzed Keratin, Lactic Acid and Algae Extract.
It is designed for damaged, frizzy or fragile hair and helps support smoother, softer and more manageable hair while improving detangling and shine.
Apply it to clean, damp hair and leave it in — no rinsing is required.
It is COSMOS NATURAL certified by ECOCERT Greenlife and contains 99% ingredients of natural origin.
Important: this product is not Vegan. Its Hydrolyzed Keratin is derived from sheep wool.
It is also not fragrance-free.
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Is Keratin in Hair Care the Same as a Salon Keratin Treatment?
No.
Daily keratin shampoos, conditioners and leave-ins are cosmetic conditioning products.
Salon keratin or smoothing treatments are different procedures that may use high heat and other chemical processes to alter how the hair behaves for a longer period.
They should not be treated as the same category.
Does Keratin “Repair” Hair Permanently?
No.
Hair outside the scalp is not living tissue, so topical hair care does not permanently regenerate damaged hair.
Keratin-based products can improve feel, smoothness, manageability and the appearance of damage, but the effect depends on continued use and the condition of the hair.
Keratin vs Gloss: Which Concern Are You Solving?
If your main concern is lack of volume, breakage or frizz, a keratin-focused routine may be appropriate.
If your main concern is simply dullness and lack of shine, a gloss-focused shampoo and conditioner may be enough.
Read next: How to Get Glossy, Smooth Hair Without Heavy Styling Products
Can Keratin Products Work for Fine Hair?
Yes, but formula weight matters.
Fine hair can become weighed down by overly rich conditioning products, so lightweight volume-focused formulas may be more suitable than very heavy masks or oils.
The Lueur Beauté Keratin Volume Boost duo is specifically positioned around fullness and volume rather than intensive heaviness.
Can Keratin Products Be Used on Colour-Treated Hair?
Possibly, but the current product information for these specific products does not provide a dedicated colour-treated-hair claim.
Are Lueur Beauté Keratin Products Vegan?
Do not assume so.
The current product information does not provide a Vegan claim for the Keratin Volume Boost Shampoo or Conditioner.
The Keratin Shine Leave-In Hair Mist is explicitly not Vegan because its Hydrolyzed Keratin is derived from sheep wool.
Are the Keratin Products Sulfate-Free?
The Keratin Volume Boost Shampoo contains Sodium Coco-Sulfate.
Therefore it should not be described as sulfate-free.
How Quickly Should You Expect Results?
There is no single guaranteed timeline.
Some users may notice improved softness or manageability after a few uses, while volume, frizz and breakage concerns depend on the hair condition, styling habits and consistency of use.
Frequently Asked Questions
Does Keratin Volume Boost Shampoo contain fragrance?
Yes. It contains Parfum/Fragrance and aromatic essential-oil components.
Is Keratin Volume Boost Shampoo Vegan?
A Vegan claim is not stated in the current product information.
Is Keratin Volume Boost Conditioner Nut Free?
No Nut Free claim is stated, and the INCI contains Sweet Almond Oil.
Is Keratin Shine Leave-In Hair Mist Vegan?
No. Its Hydrolyzed Keratin is derived from sheep wool.
Can I use the leave-in every day?
Yes. The current product information states that the Keratin Shine Leave-In Hair Mist can be used daily.
Does topical keratin permanently repair damaged hair?
No. It can improve smoothness, manageability and the appearance of damage, but it does not permanently regenerate the hair fibre.
The Main Takeaway
Keratin hair care is most useful when the concern is not only shine, but also breakage, frizz, manageability or lack of fullness.
Choose the format according to the problem: shampoo and conditioner for a volume-focused wash routine, and a leave-in mist when extra smoothing or detangling is needed.
The best results come from matching the product to the concern rather than assuming every keratin formula works the same way.
Continue Reading
Hair Care Guide: How to Build a Routine for Your Hair & Scalp