What is the Thalgo 7 Day Hydration Treatment and who is it for?

The Thalgo 7 Day Hydration Treatment is a concentrated 7-day ampoule course designed for skin experiencing acute dehydration — think post-travel, seasonal changes, or after illness. It suits all skin types and works as an emergency reset rather than a permanent daily step. Each snap-open vial delivers a fresh, potent dose of Ocean Blue Extract and Micronised Marine Algae.

How do you use the Thalgo 7 Day Hydration Treatment?

Use the Thalgo 7 Day Hydration Treatment twice daily — morning and evening — over seven consecutive days. Each vial holds two applications, so snap it open, apply half in the morning, then reseal and use the rest in the evening. Apply it as the first step in your routine, before a moisturizer like the Hydrating Cooling Gel-Cream or Hydrating Melting Cream.

What does the Thalgo 7 Day Hydration Treatment actually do for your skin?

The Thalgo 7 Day Hydration Treatment floods skin with moisture using a cocktail of 10 hydrating molecules — including sodium hyaluronate, urea, sodium PCA, amino acids, and allantoin. Tightness eases from the very first application. After the full 7-day course, 94% of users reported fully hydrated, visibly replenished skin, and 82% said their skin looked transformed and glowing.

Can I use the Thalgo 7 Day Hydration Treatment with my regular skincare routine?

Yes — the Thalgo 7 Day Hydration Treatment is designed to slot into your existing routine as the first step, before your moisturizer. Once the 7-day course is complete, Thalgo recommends continuing with the Intense Moisture-Quenching Serum as your daily hydration maintenance step to hold onto the results you've built.

Why choose Thalgo's ampoule format over a regular serum?

The snap-open ampoule format used in the Thalgo 7 Day Hydration Treatment is the same professional-grade format found in Thalgo salon treatments. Each vial is sealed until the moment you use it, keeping the active ingredients — including patented Micronised Marine Algae filtrate — fresh and potent for every single application. The formula is also made from 95% natural-origin ingredients.

The Thalgo 7 Day Hydration Treatment floods the skin with moisture using a multi-molecule approach. Instant relief, from the first application: Sodium HyaluronateImmediate surface plumping and moisture binding. AllantoinSoothes tightness and calms irritation from dehydration. Sodium PCAPart of the skin's natural moisturising factor. Restores hydration balance fast. Cumulative replenishment, over 7 days: Ocean Blue Extract (Sève Bleue des Océans)Deep sea water complex rebuilding internal moisture reserves. Amino Acid Complex (Serine, Glycine, Lysine, Glutamic Acid)Building blocks that restore the skin's natural hydration cycle.

Skip to the end of the images gallery

Skip to the beginning of the images gallery

Thalgo 7 Day Hydration Treatment - 7 x 1,2ml

The same professional-grade treatment ampoules used in Thalgo salon treatments. A Thalgo treatment with Ocean Blue Extract and Micronised Marine Algae. Targets dehydration and lack of radiance, formulated for dehydrated skin.

100% of users report: skin is more hydrated in an instant.
Snap-open ampoule format for a fresh, potent dose each day of the cure.
With Ocean Blue Extract and patented Micronised Marine Algae filtrate. Replenishes the skin's water reserves at multiple levels.

Contents: 7 x 1,2 milliliter (ml)

Special Price €31.46

Regular Price €34.95

Available
Shipped within a few working days

Key features

Hydrates
Relieves tightness
Replenishes moisture levels
Leaves skin glowing
Smoothes the skin
At least 95% natural.

Description

Thalgo 7 Day Hydration Treatment: Intensive Hydration Course with Hyaluronic Acid and Marine Algae

100% of volunteers reported more hydrated skin from the first application. After 7 days, 82% said their skin was transformed and glowing. The Thalgo 7 Day Hydration Treatment is the emergency reset in the Source Marine range: a concentrated 7-day course for skin that needs rescue-level hydration fast.

Each vial concentrates Ocean Blue Extract and patented micronised algae filtrate with a cocktail of 10 hydrating molecules including sodium hyaluronate, urea, sodium PCA, amino acids and allantoin. Tightness fades from the first use. After one week of twice-daily application, 94% reported fully hydrated, visibly replenished skin. 95% natural-origin ingredients.

Who is this product for?

For skin experiencing an acute dehydration episode: post-travel, seasonal change, after illness, or when your regular routine is not delivering enough moisture. All skin types. Use as a one-week reset, not a permanent daily step.

Complete your routine

Apply the treatment concentrate first, then follow with the Hydrating Cooling Gel-Cream or Hydrating Melting Cream. After the 7-day course, maintain results with the Intense Moisture-Quenching Serum as your daily hydration step.

Operation

The Thalgo 7 Day Hydration Treatment floods the skin with moisture using a multi-molecule approach.

Instant relief, from the first application:

Sodium Hyaluronate	Immediate surface plumping and moisture binding.
Allantoin	Soothes tightness and calms irritation from dehydration.
Sodium PCA	Part of the skin's natural moisturising factor. Restores hydration balance fast.

Cumulative replenishment, over 7 days:

Ocean Blue Extract (Sève Bleue des Océans)	Deep sea water complex rebuilding internal moisture reserves.
Amino Acid Complex (Serine, Glycine, Lysine, Glutamic Acid)	Building blocks that restore the skin's natural hydration cycle.

Application

For optimal results, use this treatment as a 7-day course. Apply half a vial (1 vial = 2 applications) in the morning and evening. After use, close the vial securely using the resealable upper section.

Result

Immediate Efficacy: 100% of users reported their skin felt more hydrated instantly, with reduced tightness and dehydration. 94% felt immediate soothing.

Proven Efficacy After 7 Days: 94% of users noticed visibly replenished, fully hydrated skin. 82% felt their skin was transformed, glowing with beauty, and fortified.

Featured ingredients

Hyaluronic acid – Can hold up to 1000 times its weight in moisture and provides intensive hydration
Glycerin – Intensely hydrates and has a soothing effect
Urea – Hydrates and gently exfoliates, contributing to soft and supple skin.

Ingredients

Aqua (Water). Propanediol. Maris Aqua (Sea Water). Glycerin. Xylitylglucoside. Pentylene Glycol. PPG-26-Buteth-26. Levulinic Acid. Sodium Hyaluronate. Urea. Anhydroxylitol. Glucose. Sodium PCA. Xylitol. Sodium Benzoate. Parfum (Fragrance). Fucus Vesiculosus Extract. Laminaria Digitata Extract. Glutamic Acid. Glycine. Lactic Acid. Lysine. Allantoin. Lithothamnion Calcareum Extract. PEG-40 Hydrogenated Castor Oil. Sodium Gluconate. Xanthan Gum. Sodium Hydroxide. Gluconolactone. Potassium Sorbate. Calcium Gluconate.

The manufacturer is responsible for the composition of the product. As the composition may change, we recommend always checking the ingredients on the packaging.

Frequently asked questions

What is the Thalgo 7 Day Hydration Treatment and who is it for?: The Thalgo 7 Day Hydration Treatment is a concentrated 7-day ampoule course designed for skin experiencing acute dehydration — think post-travel, seasonal changes, or after illness. It suits all skin types and works as an emergency reset rather than a permanent daily step. Each snap-open vial delivers a fresh, potent dose of Ocean Blue Extract and Micronised Marine Algae.
How do you use the Thalgo 7 Day Hydration Treatment?: Use the Thalgo 7 Day Hydration Treatment twice daily — morning and evening — over seven consecutive days. Each vial holds two applications, so snap it open, apply half in the morning, then reseal and use the rest in the evening. Apply it as the first step in your routine, before a moisturizer like the Hydrating Cooling Gel-Cream or Hydrating Melting Cream.
What does the Thalgo 7 Day Hydration Treatment actually do for your skin?: The Thalgo 7 Day Hydration Treatment floods skin with moisture using a cocktail of 10 hydrating molecules — including sodium hyaluronate, urea, sodium PCA, amino acids, and allantoin. Tightness eases from the very first application. After the full 7-day course, 94% of users reported fully hydrated, visibly replenished skin, and 82% said their skin looked transformed and glowing.
Can I use the Thalgo 7 Day Hydration Treatment with my regular skincare routine?: Yes — the Thalgo 7 Day Hydration Treatment is designed to slot into your existing routine as the first step, before your moisturizer. Once the 7-day course is complete, Thalgo recommends continuing with the Intense Moisture-Quenching Serum as your daily hydration maintenance step to hold onto the results you've built.
Why choose Thalgo's ampoule format over a regular serum?: The snap-open ampoule format used in the Thalgo 7 Day Hydration Treatment is the same professional-grade format found in Thalgo salon treatments. Each vial is sealed until the moment you use it, keeping the active ingredients — including patented Micronised Marine Algae filtrate — fresh and potent for every single application. The formula is also made from 95% natural-origin ingredients.