In & Out Thickening Protocol Must-Have In & Out Thickening Protoco...

~~136,50 EUR~~ 124,20 EUR -9%

1 routine

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In & Out Thickening Protocol Must-Have

Name: In & Out Thickening Protocol Must-Have
Brand: Luxeol
Price: 124.2 EUR
Availability: InStock

Thickening Dietary Supplement

3 mois - 90 gélules

Thickening Shampoo

200 ml

Thickening Mask

200 ml

Thickening Serum

100 ml

Trousse offerte

In: Thicker, fuller hair, more hair volume*
No effect on hair growth*
Out: +42% thickness from the first use*
Softer, shinier and stronger hair, without being weighed down

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Cosmétique

In & Out

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1 routine

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

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découvrez aussi

In & Out Thickening Routine for Normal Hair

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

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In & Out Thickening Routine for Dry Hair

Discover a routine combining an in-product supplement and out-product treatments to restore thickness and softness to fine hair.*

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Your expert A question about this product?

The Thickening Protocol thickens your hair by +35% from the first use*

Discover the In & Out Favorite Thickening Routine , a routine combining three essential treatments from the range and the thickening food supplement , designed for all hair types.

Composed of a shampoo , a mask and a serum , this protocol provides +42% thickness from the first use *, for visibly thicker, softer, healthier and shinier hair, without weighing down the fiber.

The Thickening Food Supplement works from within for thicker hair and more hair volume.*
Tested and approved by 107 people, with 98% overall satisfaction with the product .*
Its formula promotes hair strengthening and helps maintain normal hair.
Results : Thicker, fuller, and silkier hair day after day.*
3-month program — 1 capsule per day.

The Thickening Cosmetic Routine (shampoo, mask and serum) completes the action by increasing hair thickness by +42% from the first use *.
Composed of red algae extract , hyaluronic acid and hydrolyzed rice protein, it hydrates, nourishes and protects the fiber without weighing it down.
Hair regains softness, shine and lightness, while visibly gaining thickness and strength.

This protocol also comes with a free kit.

Results: stronger, thicker, and healthier-looking hair, thanks to a combined action from the inside out.*

Silicone- and sulfate-free cosmetics*

Clinically proven cosmetics

Plant-based capsule

Made in France

ACTIONS

Actions In: Thickening Food Supplement

Food supplement based on Horsetail, Nettle, Collagen Peptides, Methane Methylsulfonate (MSM), Amino Acids, Vitamins and Minerals.

Contributes to the maintenance of normal hair.
Thanks to Vitamin B8

Promotes hair strengthening.
Thanks to the Nettle

Promotes hair fortification, strengthening and growth.
Thanks to the field horsetail

Contributes to the maintenance of normal hair.
Thanks to Selenium

Contributes to the normal synthesis of cysteine.
Thanks to Vitamin B6

Contributes to the maintenance of normal hair.
Thanks to Zinc

Action Out: The thickening protocol increases hair thickness by +42%*

An immediate and lasting effect*
The Favorite Thickening Routine consists of a shampoo, a mask, and a serum. This routine underwent an ex-vivo study, meaning on strands of hair initially taken, which demonstrated proven effectiveness in increasing hair thickness: +42% from the first use, as well as a lasting effect*.

Consulter les justifications(*)

Justifications

Dietary supplement: Luxéol Thickener
*Usage test, carried out in 2025 by an independent laboratory on 107 people for 3 months, at a rate of one capsule per day.

Cosmetics: Luxéol Thickening Protocol
*Ex-vivo test, 25 strands, % thickness after immediate use (shampoo + mask + serum). Lasting effect: +45% after 16 applications.
Free from sulfated surfactants.

RÉSULTATS CONSOMMATEURS

A formula approved by testers

Thickening Routine - Favorite Product: Strengthened, soft, and nourished hair fiber

87%find their hair moisturized
83%They 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 light

Shampoo

A formula with 95% naturally derived ingredients, which cleanses without weighing down the skin.

77%notice a light and pleasant foam
84%They find that the product gently cleanses the hair while enveloping it in a delicate fragrance.
73%find that their hair is easy to detangle and style
86%find that the product does not weigh down the hair

Mask

A creamy formula that provides shine, softness, and lightness.

93%They find that the product detangles and softens the hair
84%find that the product brings lightness and suppleness to the hair
86%find that the mask does not weigh down the hair
81%find their hair shiny

Serum

A fluid formula that provides shine, lightness and reduces frizz.

89%find the texture fluid and light
84%note that the product does not make hair greasy
79%They find that the serum makes hair soft and light.

Thickening Food Supplement

Thicker hair

95%find their hair thicker
96%find their hair thicker
90%observe an increase in hair mass

More beautiful and silkier hair

97%find their hair more beautiful
94%find their hair silkier
95%confirm the absence of any effect on hair growth

Consulter les justifications(*)

Résultats tests consommateurs et justifications

Thickening Cosmetics Routine:
A usage test was conducted on 70 volunteers. After 28 days of use, 2 to 3 times a week, of the Coup de Coeur Thickening Protocol (shampoo + mask + serum), the testers observed hydrated, stronger, nourished and lighter hair.

Thickening Food Supplement
A usage test was conducted on 107 testers. After 3 months of using the thickening food supplement, at a rate of one capsule per day, the testers found their hair to be thicker, more beautiful, fuller, silkier and with more hair volume.

INGRÉDIENTS

Hyaluronic acid

Hyaluronic acid is known for hydrating, plumping, and protecting the hair fiber.

Hydrolyzed rice protein

Extracted from rice, it provides moisturizing and protective properties for both the scalp and the hair fiber.

Red algae extract

Improves hair quality by enhancing strength, thickness, and vitality.

Nettle

Urtica dioica
Nettle, from the Urticaceae family, helps strengthen the hair. Its leaves are particularly known for their high mineral content, especially silica.

Vitamin B8

D-biotin
An essential water-soluble vitamin that contributes to the normal metabolism of macronutrients and helps maintain normal hair.

Horsetail

Equisetum arvense L.
A common annual plant found in temperate regions, growing in moist soils. It is characterized by its distinctive horsetail-like shape.

Selenium

Selenium is a trace element essential for the body’s metabolism. It is known to help protect cells from oxidative stress and to contribute to the maintenance of normal hair and nails.

Vitamin B6

An essential water-soluble vitamin that contributes to the normal synthesis of cysteine and helps regulate hormonal activity.

Zinc

Zinc is a trace element essential for the body’s metabolism. It is known to help protect cells from oxidative stress and to contribute to the maintenance of normal hair and nails.

Ingredients list

Thickening Dietary Supplement

Hydroxypropyl methylcellulose (plant-based capsule); horsetail aerial part powder (Equisetum arvense); nettle leaf extract (Urtica dioica); methylsulfonylmethane; marine collagen peptides (FISH, MOLLUSCS, AND CRUSTACEANS); zinc citrate; L-cysteine hydrochloride; L-ascorbic acid (vitamin C); L-methionine; L-serine; anti-caking agent: magnesium salts of fatty acids; pyridoxine hydrochloride (vitamin B6); D-biotin (vitamin B8); sodium selenite.

Thickening Shampoo

Aqua, Cocamidopropyl Betaine, Glycerin, Sodium Methyl Cocoyl Taurate, Sodium Chloride, Lauryl Glucoside, Sodium Hyaluronate, Palmaria Palmata Extract, Arginine, Hydrolyzed Sweet Almond Protein, Hydrolyzed Rice Protein, Starch Hydroxypropyltrimonium Chloride, Parfum, Coconut Acid, Phenethyl Alcohol, Glyceryl Caprylate, Lactic Acid, Sodium Lactate, Urea, Citric Acid, Pentylene Glycol, p-Anisic Acid, Levulinic Acid, 1,2-Hexanediol, Sodium Benzoate.

Thickening Mask

Aqua, Stearyl Alcohol, Cetyl Alcohol, Prunus Amygdalus Dulcis Oil, Glycerin, Brassicamidopropyl Dimethylamine, Sodium
Hyaluronate, Palmaria Palmata Extract, Hydrolyzed Rice Protein, Arginine, Butyrospermum Parkii Butter, Cocos Nucifera Oil,
Hydrolyzed Sweet Almond Protein, Parfum, Lactic Acid, Pentylene Glycol, Levulinic Acid, Glyceryl Caprylate, Sodium Benzoate,
Potassium Sorbate.

Thickening Serum

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

Nutritional information

	Amount per 1 capsule	% RI**
Horsetail aerial parts powder	75 mg	-
Nettle leaf extract	75 mg	-
Marine collagen peptides	50 mg	-
Methylsulfonylmethane (MSM)	50 mg	-
L-cysteine	25 mg	-
L-methionine	25 mg	-
L-serine	25 mg	-
Vitamin C	24 mg	30%
Zinc	9.7 mg	97%
Vitamin B6	5.6 mg	400%
Biotin (vitamin B8)	500 µg	1000%
Selenium	67 µg	121%

ACTIONS

Actions In: Thickening Food Supplement

Food supplement based on Horsetail, Nettle, Collagen Peptides, Methane Methylsulfonate (MSM), Amino Acids, Vitamins and Minerals.

Contributes to the maintenance of normal hair.
Thanks to Vitamin B8

Promotes hair strengthening.
Thanks to the Nettle

Promotes hair fortification, strengthening and growth.
Thanks to the field horsetail

Contributes to the maintenance of normal hair.
Thanks to Selenium

Contributes to the normal synthesis of cysteine.
Thanks to Vitamin B6

Contributes to the maintenance of normal hair.
Thanks to Zinc

Action Out: The thickening protocol increases hair thickness by +42%*

An immediate and lasting effect*
The Favorite Thickening Routine consists of a shampoo, a mask, and a serum. This routine underwent an ex-vivo study, meaning on strands of hair initially taken, which demonstrated proven effectiveness in increasing hair thickness: +42% from the first use, as well as a lasting effect*.

Consulter les justifications(*)

Justifications

Dietary supplement: Luxéol Thickener
*Usage test, carried out in 2025 by an independent laboratory on 107 people for 3 months, at a rate of one capsule per day.

Cosmetics: Luxéol Thickening Protocol
*Ex-vivo test, 25 strands, % thickness after immediate use (shampoo + mask + serum). Lasting effect: +45% after 16 applications.
Free from sulfated surfactants.

RÉSULTATS CONSOMMATEURS

A formula approved by testers

Thickening Routine - Favorite Product: Strengthened, soft, and nourished hair fiber

87%find their hair moisturized
83%They 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 light

Shampoo

A formula with 95% naturally derived ingredients, which cleanses without weighing down the skin.

77%notice a light and pleasant foam
84%They find that the product gently cleanses the hair while enveloping it in a delicate fragrance.
73%find that their hair is easy to detangle and style
86%find that the product does not weigh down the hair

Mask

A creamy formula that provides shine, softness, and lightness.

93%They find that the product detangles and softens the hair
84%find that the product brings lightness and suppleness to the hair
86%find that the mask does not weigh down the hair
81%find their hair shiny

Serum

A fluid formula that provides shine, lightness and reduces frizz.

89%find the texture fluid and light
84%note that the product does not make hair greasy
79%They find that the serum makes hair soft and light.

Thickening Food Supplement

Thicker hair

95%find their hair thicker
96%find their hair thicker
90%observe an increase in hair mass

More beautiful and silkier hair

97%find their hair more beautiful
94%find their hair silkier
95%confirm the absence of any effect on hair growth

Consulter les justifications(*)

Résultats tests consommateurs et justifications

Thickening Cosmetics Routine:
A usage test was conducted on 70 volunteers. After 28 days of use, 2 to 3 times a week, of the Coup de Coeur Thickening Protocol (shampoo + mask + serum), the testers observed hydrated, stronger, nourished and lighter hair.

Thickening Food Supplement
A usage test was conducted on 107 testers. After 3 months of using the thickening food supplement, at a rate of one capsule per day, the testers found their hair to be thicker, more beautiful, fuller, silkier and with more hair volume.

INGRÉDIENTS

Hyaluronic acid

Hyaluronic acid is known for hydrating, plumping, and protecting the hair fiber.

Hydrolyzed rice protein

Extracted from rice, it provides moisturizing and protective properties for both the scalp and the hair fiber.

Red algae extract

Improves hair quality by enhancing strength, thickness, and vitality.

Nettle

Urtica dioica
Nettle, from the Urticaceae family, helps strengthen the hair. Its leaves are particularly known for their high mineral content, especially silica.

Vitamin B8

D-biotin
An essential water-soluble vitamin that contributes to the normal metabolism of macronutrients and helps maintain normal hair.

Horsetail

Equisetum arvense L.
A common annual plant found in temperate regions, growing in moist soils. It is characterized by its distinctive horsetail-like shape.

Selenium

Selenium is a trace element essential for the body’s metabolism. It is known to help protect cells from oxidative stress and to contribute to the maintenance of normal hair and nails.

Vitamin B6

An essential water-soluble vitamin that contributes to the normal synthesis of cysteine and helps regulate hormonal activity.

Zinc

Zinc is a trace element essential for the body’s metabolism. It is known to help protect cells from oxidative stress and to contribute to the maintenance of normal hair and nails.

Ingredients list

Thickening Dietary Supplement

Hydroxypropyl methylcellulose (plant-based capsule); horsetail aerial part powder (Equisetum arvense); nettle leaf extract (Urtica dioica); methylsulfonylmethane; marine collagen peptides (FISH, MOLLUSCS, AND CRUSTACEANS); zinc citrate; L-cysteine hydrochloride; L-ascorbic acid (vitamin C); L-methionine; L-serine; anti-caking agent: magnesium salts of fatty acids; pyridoxine hydrochloride (vitamin B6); D-biotin (vitamin B8); sodium selenite.

Thickening Shampoo

Aqua, Cocamidopropyl Betaine, Glycerin, Sodium Methyl Cocoyl Taurate, Sodium Chloride, Lauryl Glucoside, Sodium Hyaluronate, Palmaria Palmata Extract, Arginine, Hydrolyzed Sweet Almond Protein, Hydrolyzed Rice Protein, Starch Hydroxypropyltrimonium Chloride, Parfum, Coconut Acid, Phenethyl Alcohol, Glyceryl Caprylate, Lactic Acid, Sodium Lactate, Urea, Citric Acid, Pentylene Glycol, p-Anisic Acid, Levulinic Acid, 1,2-Hexanediol, Sodium Benzoate.

Thickening Mask

Aqua, Stearyl Alcohol, Cetyl Alcohol, Prunus Amygdalus Dulcis Oil, Glycerin, Brassicamidopropyl Dimethylamine, Sodium
Hyaluronate, Palmaria Palmata Extract, Hydrolyzed Rice Protein, Arginine, Butyrospermum Parkii Butter, Cocos Nucifera Oil,
Hydrolyzed Sweet Almond Protein, Parfum, Lactic Acid, Pentylene Glycol, Levulinic Acid, Glyceryl Caprylate, Sodium Benzoate,
Potassium Sorbate.

Thickening Serum

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

Nutritional information

	Amount per 1 capsule	% RI**
Horsetail aerial parts powder	75 mg	-
Nettle leaf extract	75 mg	-
Marine collagen peptides	50 mg	-
Methylsulfonylmethane (MSM)	50 mg	-
L-cysteine	25 mg	-
L-methionine	25 mg	-
L-serine	25 mg	-
Vitamin C	24 mg	30%
Zinc	9.7 mg	97%
Vitamin B6	5.6 mg	400%
Biotin (vitamin B8)	500 µg	1000%
Selenium	67 µg	121%

Accordion content

CONSEILS D'UTILISATION

Thickening shampoo:

Shake before use. Apply 2 to 3 times a week to wet hair.
Leave to act and rinse.

Thickening mask:

Apply 2 to 3 times a week after using the Thickening Shampoo. Distribute through the lengths and ends, leave on for 5 minutes, then rinse. Finish by applying the Thickening Serum.

Next, apply the Luxéol thickening serum.

Thickening serum:

Apply 2 to 3 times a week, on dry hair.
Apply to the lengths and ends of your hair after shampooing and applying the mask. Do not rinse.

Thickening Food Supplement

1 capsule per day to be swallowed with a large glass of water for 90 days.

Precautions of use

Thickening Protocol

Avoid contact with eyes. In case of contact with eyes, rinse thoroughly with clean water. Store away from heat.

Thickening Food Supplement

For adults only.
Not recommended in cases of heart failure or edematous kidney disease.
Not recommended for pregnant or breastfeeding women.
Dietary supplements should be used as part of a healthy lifestyle and not as a substitute for a varied and balanced diet.
Keep out of reach of young children.
Do not exceed the recommended daily dose.
Store in a cool, dry place away from light.
CANNOT BE COMBINED WITH: LUXÉOL GUMMIES FORCE & GROWTH, LUXÉOL KERATIN COMPLEX AND LUXÉOL ZINC 15, AND LUXÉOL POST-PREGNANCY COMPLEX.

Net weight

Food Supplement Thickener: 43.6g (3-month supply)

FAQ

What hair type is Luxéol Thickening Routine suitable for?

The thickening protocol was specially formulated for fine hair.

How long does it take to see results after using the Thickening Routine?

Our ex vivo study demonstrated an increase in hair thickness from the first use and persisting after several applications.
For the Thickening Food Supplement: 95% of users report being satisfied after 1 month of use and 98% after 3 months of use.*

Does Luxéol Thickening Food Supplement have an effect on hair growth?

No, Luxéol Thickening Food Supplement has no effect on hair growth: 95% of people found that the product has no effect on hair growth.

What is the difference between Luxéol Thickening Food Supplement and Luxéol Growth, Strengthening & Fortification?

Luxéol Growth, Strengthening & Fortification is a food supplement that will help make hair stronger and longer over time, while Luxéol Thickening food supplement will act on hair thickness.

Is the Luxéol thickening routine suitable for pregnant and/or breastfeeding women?

Yes, the Thickening cosmetic routine is compatible with pregnant and breastfeeding women.
The Thickening Food Supplement is not recommended for pregnant or breastfeeding women.

Where can I find the product information sheet relating to the qualities and environmental characteristics of the thickening protocol?

The product information sheet relating to cosmetic environmental qualities and characteristics can be found here,
those of the complements are found here.

x

Thickening shampoo:

Shake before use. Apply 2 to 3 times a week to wet hair.
Leave to act and rinse.

Thickening mask:

Apply 2 to 3 times a week after using the Thickening Shampoo. Distribute through the lengths and ends, leave on for 5 minutes, then rinse. Finish by applying the Thickening Serum.

Next, apply the Luxéol thickening serum.

Thickening serum:

Apply 2 to 3 times a week, on dry hair.
Apply to the lengths and ends of your hair after shampooing and applying the mask. Do not rinse.

Thickening Food Supplement

1 capsule per day to be swallowed with a large glass of water for 90 days.

Precautions of use

Thickening Protocol

Avoid contact with eyes. In case of contact with eyes, rinse thoroughly with clean water. Store away from heat.

Thickening Food Supplement

For adults only.
Not recommended in cases of heart failure or edematous kidney disease.
Not recommended for pregnant or breastfeeding women.
Dietary supplements should be used as part of a healthy lifestyle and not as a substitute for a varied and balanced diet.
Keep out of reach of young children.
Do not exceed the recommended daily dose.
Store in a cool, dry place away from light.
CANNOT BE COMBINED WITH: LUXÉOL GUMMIES FORCE & GROWTH, LUXÉOL KERATIN COMPLEX AND LUXÉOL ZINC 15, AND LUXÉOL POST-PREGNANCY COMPLEX.

Net weight

Food Supplement Thickener: 43.6g (3-month supply)

What hair type is Luxéol Thickening Routine suitable for?

The thickening protocol was specially formulated for fine hair.

How long does it take to see results after using the Thickening Routine?

Our ex vivo study demonstrated an increase in hair thickness from the first use and persisting after several applications.
For the Thickening Food Supplement: 95% of users report being satisfied after 1 month of use and 98% after 3 months of use.*

Does Luxéol Thickening Food Supplement have an effect on hair growth?

No, Luxéol Thickening Food Supplement has no effect on hair growth: 95% of people found that the product has no effect on hair growth.

What is the difference between Luxéol Thickening Food Supplement and Luxéol Growth, Strengthening & Fortification?

Luxéol Growth, Strengthening & Fortification is a food supplement that will help make hair stronger and longer over time, while Luxéol Thickening food supplement will act on hair thickness.

Is the Luxéol thickening routine suitable for pregnant and/or breastfeeding women?

Yes, the Thickening cosmetic routine is compatible with pregnant and breastfeeding women.
The Thickening Food Supplement is not recommended for pregnant or breastfeeding women.

Where can I find the product information sheet relating to the qualities and environmental characteristics of the thickening protocol?

The product information sheet relating to cosmetic environmental qualities and characteristics can be found here,
those of the complements are found here.