Thickening Serum Thickening Serum

~~79,80 €~~ 77,40 € -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 (1539 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 €~~ 77,40 €

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

1 bottle

39,90 €

BEST PRICE

3 bottles

-6%

~~119,70 €~~ 112,50 €

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

🎁 Conditionneur Épaississant offert dès 50€ d'achat après remise !

Conditionneur Épaississant offert
dès 50€ d'achat après remise !

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 €~~ 78,80 €

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 €~~ 124,20 €

Your expert 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 the laboratory test results and supporting evidence(*)

Laboratory test results and supporting evidence

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

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 the supporting evidence(*)

Consumer test results and supporting evidence

*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 on visuals and before/after photos(*)

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.

DIRECTIONS FOR USE

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.

Are Luxéol cosmetic products dermatologically tested?

Yes. Luxéol cosmetic products are dermatologically tested in order to assess their good skin tolerance.

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

HAIRCARE EXPERT

+150 PRODUCT TESTS¹

COMMITTED CSR LABEL
(AFNOR)

SATISFIED OR
REFUNDED³

+20 BEAUTY AWARDS

Discover also:

Hair diagnosis

Discover your personalised haircare routine in just a few clicks!

START MY DIAGNOSIS

For your health, eat at least five portions of fruit 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; read product labels carefully before use.

¹: 150+ product tests: Total number of products tested by Luxéol (clinical studies, user trials and ex vivo tests) across all products developed as at 18/06/2026.
100+ consumer tests as at 18/06/2026. Products counted individually, including when several products were evaluated in the same study.
Cosmetics and food supplements 100% made in France, except for the nail treatment and special volume treatment. Free from sulphate surfactants.

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

³: Excludes subscriptions. See the terms and conditions of sale

⁴: AUTUMN: Autumn promotion. One free leave-in conditioner with purchases of €50 or more, after discounts. Offer valid until 26 November 2026 (while stocks last).

**: Average rating based on our customer reviews on luxeol.com and Google as at 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

DIRECTIONS FOR USE

Precautions for 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?

Are Luxéol cosmetic products dermatologically tested?

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

Discover also:

Hair diagnosis