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Expert in organic products and insect control since 2002
Ultra-comfort Moisturizing Serum – 50 ml - Dermatherm

Ultra comfort moisturizing booster serum – 50 ml

€30.75 Tax included
Delivery expected from 07/26/2024

Formulated without preservatives, Ultra Comfort Moisturizing Booster Serum is an active thermal treatment that is 100% natural. Concentrated in marine coralline, magnesium and sodium PCA, it provides the skin with a hydration boost to restore its moisture balance and limit skin ageing due to dehydration. 50 ml bottle

In stock (4 Items)

Limits skin aging due to dehydration

Dermatherm, peaux normales à sèches

A serum is a facial care product that is characterised by a formula with a high concentration of active ingredients. A serum is not only intended to beautify or moisturise the skin. It has a deep action on the skin cells and reinforces the effectiveness of the creams used on a daily basis, while preparing the epidermis to receive care. To know if you need a serum, simply observe your skin. If you feel that your skin is lacking radiance, is tight or has blemishes despite your usual routine, an intensive treatment will most certainly be beneficial.

With its optimal combination of Cevennes thermal spring water, organic orange water and 100% natural Sodium PCA coupled with a marine coralline concentrate (red algae), this hydration booster serum, specifically developed for normal to dry skin, provides the skin with a hydration boost to restore moisture balance and limit skin ageing due to dehydration.

Advantages of this ultra comfort hydrating booster serum

+ A combination of 100% natural active ingredients to boost your skin's hydration

+ Restores the skin's moisture balance and limits skin ageing due to dehydration

+ Washing base rich in thermal water, absolutely respects the skin's balance,

+ Sterile cosmetic, world patented technology by UHT (Ultra High Temperature),

+ Airless bottle with an extreme antimicrobial closure,

+ Hypoallergenic, no preservatives, no parabens, no phenoxyethanol, no colorants,

+ Dermatologically tested,

+ Not tested on animals,

+ Certified Cosmos Organic by Ecocert 

+ Developed and manufactured in France

Tested and approved

This moisturizing booster serum has been tested under dermatological control by the Dermatherm laboratory on 20 volunteers with sensitive skin for 3 weeks. The results of this study are as follows :

+ 60% improvement in hydration

This serum is also enriched with coralline, a red algae found mainly on the rocky coasts of Great Britain and Ireland. It gets its reddish hue from calcium carbonate deposits in the cell wall. This calcium, when applied to the skin, can help regulate the skin's oil production. Like other seaweed, this seaweed carries a wide range of active ingredients. It contains polysaccharide, amino acids, lipids, minerals, vitamins, chlorophyll, carotenoids, phycobilines and other trace elements. In addition, it carries a marine enzyme that contains three elements, an epidermal growth factor and trace elements. Coralline also helps to exfoliate the skin, bringing back lost radiance. It contains a variety of ingredients that can help the skin to remove dead skin cells, eliminate free radicals and make the skin moisturised, just like an anti-ageing treatment. It hydrates the skin, brightens it and makes it smooth.

For whom ? For what ? How do we do it ?

For whom ? Normal to dry skin. Young skin with imperfections subjected to drying treatments. Men to soothe shaving irritation. Skin exposed to the sun for a long time or repeatedly. Mature skin, for a radiant complexion and denser skin.

What is it for ? To give the skin a moisture boost to restore moisture balance and limit skin ageing due to dehydration.

How to use it ? Thanks to a simple, effective and controlled formula: Thermal Spring Water, moisturising active ingredients, magnesium and tensors of natural origin.

Its main active ingredients

Actifs de la crème hydratante riche Ultra Confort Dermatherm

Organic orange water 

• Rich in trace elements

• Biologically active

• Helps to hydrate the skin

• Helps to protect skin cells against environmental stress


Sodium PCA 100% natural origin

• Amino acid of plant origin naturally present in many proteins

• Natural moisturiser: helps maintain skin hydration

• Promotes elasticity and radiance of the epidermis


Cevennes thermal spring water

• Approved by the Academy of Medicine for its dermatological applications

• An exceptional water 17 km from the Dermatherm laboratory, protected from any contamination

• Regenerating and soothing properties and excellent skin tolerance

• Rich in calcium and magnesium, sulphurous, participates in the good balance of the skin

Cosmetic UHT sterilization

All Dermatherm products are UHT sterilized (world patent). Today, this is the only way to eliminate any preservatives or stabilizers, while preserving the quality of the active ingredients. UHT sterilisation consists of raising the temperature of the product to 135°C for a few seconds and then cooling it just as quickly. Tests are carried out before and after sterilisation to ensure the preservation of the active ingredients.

Focus on the Dermatherm thermal water of the Cevennes

Dermatherm et son eau thermale

The thermal spa of Les Fumades-les-Bains (France) is approved for its dermatological cures. Its thermal water is recognised by the Academy of Medicine for its therapeutic benefits.

The water of Les Fumades-les-Bains contains thermal sulphur (the most sulphurous in Europe), calcium, magnesium and copper. The sedative effect of magnesium compensates for the tonic action of sulphur. The presence of calcium explains the very good tolerance of the water. Copper has a beneficial effect on acne, eczema, psoriasis and pruritus (itching). In addition to these complementary actions, thermal sulphur plays an essential role in improving the natural immune defences.

This mineral balance gives it anti-allergic, antihistaminic, healing and sedative properties for inflammatory phenomena.

Sheltered from any contamination, and located at the foot of the Cévennes National Park, the site that supplies the spring is a privileged area. There are no large towns, no heavy industry and no intensive farming. The path of the water through the geological layers determines its particular characteristics : its constant composition, its exceptional purity and its balance in trace elements.

This exceptional quality water enriches the purified formulas of Dermatherm skin care products.

Why avoid preservatives ?

Dermatherm, peaux normales à sèches

What is a preservative ?

• What is a preservative ? A chemical substance that preserves a product by limiting bacterial proliferation

 Note that even certified organic cosmetics contain one or more preservatives (selected from an authorised list).


Why are we better off without them ?
They do not help the skin, on the contrary.
Preservatives are often irritating and allergenic. They attack the skin's microbiome, the balance of which is essential to the skin's good health. Many of them, such as paraben, are suspected of being a health hazard.

The Dermatherm product range contains 0% preservatives.


Application tips

Apply a small amount morning and evening to cleansed face and neck. Gently massage the serum into the skin. To be applied before your daily care. 

Its composition

Organic sweet orange water*, thermal spring water, water, moisturizing agents, natural vegetable glycerin, xanthan gum, magnesium gluconate, emollient agent of vegetable origin, natural fragrance. 

INCI Ingrédients

Citrus aurantium dulcis (orange) fruit extract*, Aqua (thermal water), Aqua (water), Sodium lactate, Glycerin, sodium PCA, Xanthan gum, Lauroyl lysine, Magnesium gluconate, Caprilic/capric triglycerine, Parfum, Laminaria ochroleuca extract, Corallina officinalis extract. 

100 % of the total ingredients are of natural origin.

60 % of the total ingredients are from organic farming.

Ecological and Organic Cosmetic certified by Ecocert SAS.

* Ingredients from organic farming.

Yuka rating

This product is rated 100/100 on the Yuka application. 

Period of use

This product can be used for 6 months after the first use. 


50 ml airless bottle in a PEFC certified cardboard box. The pump bottle is made of recyclable plastic and has an airless system. As soon as the pump is released, the bottle closes again to prevent air from getting in, eliminating any risk of retrocontamination. This state-of-the-art technology protects the formula from environmental contamination and microbes for the duration of its use.

Dermatherm, the 1st dermo-organic brand certified organic without preservatives

Dermatherm, cosmétiques stériles

- Worldwide patented technology: UHT Ultra High Temperature

- Eliminates 100% of germs and bacteria while preserving the quality of the active ingredients

- Unique, safe and ecological technique: uses only heat

- Airless bottle with extreme antimicrobial closure

- Dedicated & qualified infrastructures

- Teams specifically trained in UHT

- Careful selection of active ingredients of natural origin

- Maximum tolerance and proven effectiveness

- Pure and uncompromising care

- All the products in the Dermatherm range are certified organic by one of the most demanding specifications in the cosmetics industry

- Brand developed under pharmaceutical control

- Tested under dermatological control

- Alcohol-free, essential oil-free, petrochemical-free and fragrance-free (sensitive skin range)

Labels / certifications
Cosmos Organic
50 ml
Skin type
Normal to dry
Key assets
Sodium PCA
Key assets
Key assets
Key assets
Thermal water

Specific references

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Ultra comfort moisturizing booster serum – 50 ml

Formulated without preservatives, Ultra Comfort Moisturizing Booster Serum is an active thermal treatment that is 100% natural. Concentrated in marine coralline, magnesium and sodium PCA, it provides the skin with a hydration boost to restore its moisture balance and limit skin ageing due to dehydration. 50 ml bottle

Write your review