Thickening Serum Thickening Serum

~~79,80 EUR~~ 77,40 EUR -3%

2 bottles

Best seller

Thickening Serum

Name: Thickening Serum
Brand: Luxéol
SKU: LUX25_PFN_80630FR-2
Price: 77.4 EUR
Availability: InStock
Rating: 4.1 (1431 reviews)

100 ml

+42% thickness from the 1st use*
Long-lasting effect*
Hair thicker, stronger*
Hair shiny and nourished*

Quantity

RECOMMENDED

2 bottles

-3%

~~79,80 EUR~~ 77,40 EUR

*Lot de 2 : 38,70€ l'unité au lieu de 39,90€

1 bottle

39,90 EUR

BEST PRICE

3 bottles

-6%

~~119,70 EUR~~ 112,50 EUR

*Lot de 3 : 37,50€ l'unité au lieu de 39,90€

Your complete routine with:

Favourite Thickening Protocol

A complete routine to restore thickness and softness to fine hair from the very first use.*

-9%

~~86,70 EUR~~ 78,80 EUR

Favourite Thickening Routine - In&Out

Discover an In & Out routine that combines a food supplement and cosmetic treatments to restore thickness, strength and radiance to fine hair.*

-9%

~~136,50 EUR~~ 124,20 EUR

Your expert AI

A question about this product?

The Thickening Serum, integrated into the protocol, thickens your hair by +42% from the 1st use*

Fine hair lacking thickness?

Part of the Favourite Thickening Routine comprising the shampoo, mask, and serum, this serum increases hair thickness by +42% from the very 1st use with a long-lasting effect*

Its formula, enriched with red algae extract, hyaluronic acid, and hydrolysed rice protein, hydrates and brings suppleness and weightless feel to hair.

Hair is shiny with less frizz and no heaviness.

For best results, choose the Favourite Thickening Routine!

Proven efficacy

Silicone-free

97% naturally derived ingredients

Made in France

CLINICAL RESULTS

Fine hair lacking thickness?

Part of the Favourite Thickening Routine comprising the shampoo, mask, and serum, this serum increases hair thickness by +42% from the very 1st use with a long-lasting effect*

Its formula, enriched with red algae extract, hyaluronic acid, and hydrolysed rice protein, hydrates and brings suppleness and weightless feel to hair.

Hair is shiny with less frizz and no heaviness.

For best results, choose the Favourite Thickening Routine!

LABORATORY TEST RESULTS

Proven efficacy

Increases hair thickness by 42%*

An immediate and long-lasting effect*
The Favourite Thickening Protocol consisting of a shampoo, a mask, and a serum. This protocol was the subject of an ex vivo, meaning on pre-collected locks of hair, which demonstrated proven efficacy in increasing hair thickness: +42% from the very first use as well as a long-lasting effect*.

View laboratory test results and justifications(*)

Laboratory test results and justifications

*Ex-vivo test, 25 locks, 42% after immediate use (shampoo + mask + serum). Long-lasting effect: +45% after 16 applications.
Sulphate-free surfactants.

*Usage test, 70 subjects, 28 days of use 2 to 3 times a week of the Thickening Protocol Must-Have (Shampoo + mask + Serum):

Stronger hair: 69% found their hair felt stronger.
Shiny and nourished hair: 71% found their hair looked healthy and shiny. 84% found their hair felt nourished.

CONSUMER RESULTS

A formula approved by testers

A user test was conducted on 70 volunteers. After 28 days of use, 2 to 3 times a week, of the Thickening Protocol Must-have (Shampoo + Mask + Serum), testers observed hydrated, stronger, nourished and lightweight hair.

A reinforced, soft and nourished hair fibre

87% find their hair hydrated
83% find that using the routine makes detangling and styling easier
84 % find that their hair is nourished
77% find that their hair is softer
74% find that their hair is silky and lightweight

Sensoriality: Serum

A fluid formula that adds shine, lightness and reduces frizz.
89 % find the texture fluid and lightweight
84 % find that the product does not make hair greasy
79% find that the serum leaves hair supple and lightweight

View justifications(*)

Consumer test results and justifications

*Usage test, 70 subjects, 28 days of use 2 to 3 times a week of the Thickening Protocol Must-Have (Shampoo + mask + Serum):
Stronger hair: 69% found their hair stronger.
Shiny and nourished hair: 71% found their hair healthy and shiny. 84% found their hair nourished.

Information about visuals and before/after(*)

Information about visuals and before/after

*Illustrations of results obtained with the range's products, following the recommended usage instructions. Individual results may vary.

INGREDIENTS

Hyaluronic Acid

Hyaluronic acid is known for moisturising, replumping, and protecting the hair fibre.

Hydrolysed Rice Protein

Extracted from rice, it offers both moisturising and protective properties for the scalp and hair fibre.

Red algae extract

Improves hair quality, bringing strength, thickness, and vitality.

Ingredients list

Aqua, Glycerin, Sodium Hyaluronate, Palmaria Palmata Extract, Arginine, Hydrolyzed Rice Protein, Aloe Barbadensis Leaf Juice Powder, Inulin, Parfum, Pentylene Glycol, Phenethyl Alcohol, Glyceryl Caprylate, Carbomer, Sodium Hydroxide, 1,2-Hexanediol, Levulinic Acid.

USAGE INSTRUCTIONS

FAQ

Which hair type is Luxéol Thickening Serum suitable for?

The Thickening Serum has been specially formulated for fine hair.

How long does it take to see results after use?

Our study demonstrated an increase in hair thickness from the 1st use, lasting after several applications with the Thickening Shampoo, mask and thickening serum.

Does Luxéol Thickening Serum contain silicones?

No, Luxéol Thickening Serum does not contain silicones.

Is Luxéol Thickening Serum suitable for pregnant and/or breastfeeding women?

Yes, this serum is suitable for pregnant and breastfeeding women.

Where can I find the product sheet on the environmental qualities and characteristics of Luxéol Thickening Serum?

The product sheet on the environmental qualities and characteristics of Luxéol Thickening Serum can be found here.

100% MADE IN FRANCE¹

CLINICAL RESULTS

HAIR CARE EXPERT

+150 PRODUCT TESTS¹

CSR COMMITTED LABEL
(AFNOR)

SATISFIED OR
REFUNDED³

+27 BEAUTY AWARDS

Discover also:

Hair diagnostic

Discover your personalised hair care routine in just a few clicks!

START MY DIAGNOSTIC

For your health, eat at least five fruits and vegetables a day - www.mangerbouger.fr

Food supplements should be used as part of a healthy lifestyle and should not be used as substitutes for a varied and balanced diet.
Luxéol is a brand of food supplements and cosmetic products primarily for hair and skin. Individual results may vary.

Information may change, please read product labelling carefully before use.

¹: +150 product tests: Total number of products tested by Luxéol (clinical studies, usage tests and ex vivo tests) across all products developed as of 18/06/2026.
+ 100 consumer tests as of 18/06/2026. Products counted individually, including when several products were evaluated in the same study.
Cosmetics and food supplements 100% made in France with the exception of the nail care and special volume. No sulphated surfactants.

²: Total number of Luxéol consumer reviews recorded as of 08/04/2026: 83760, from all sources combined (luxeol.com and third-party platforms).

³: Excluding subscriptions. See T&Cs

⁴: SUMMER DEAL: Summer promotion. 1 thickening serum free from €50 of purchases.

**: Average rating from our customer reviews on luxeol.com and Google as of 13/05/2026.

Needs

Product types

Hair types

Travel size & Accessories

Thickening Serum

Your complete routine with:

Favourite Thickening Protocol

Favourite Thickening Routine - In&Out

The Thickening Serum, integrated into the protocol, thickens your hair by +42% from the 1st use*

CLINICAL RESULTS

LABORATORY TEST RESULTS

Proven efficacy

Increases hair thickness by 42%*

CONSUMER RESULTS

A formula approved by testers

A reinforced, soft and nourished hair fibre

Sensoriality: Serum

INGREDIENTS

Ingredients list

USAGE INSTRUCTIONS

Precautions of use

FAQ

Which hair type is Luxéol Thickening Serum suitable for?

How long does it take to see results after use?

Does Luxéol Thickening Serum contain silicones?

Is Luxéol Thickening Serum suitable for pregnant and/or breastfeeding women?

Where can I find the product sheet on the environmental qualities and characteristics of Luxéol Thickening Serum?

Discover also:

Hair diagnostic