Black caviar. The signature ingredient.
The NERO signature, at the heart of four skincare products designed for your comfort.
Naturally rich in omega-3 fatty acids, black caviar also contains proteins and minerals. This composition makes it a distinctive raw material whose extracts are of interest to cosmetic researchers [1].
At NERO, we combine it with brown algae throughout the collection. A signature duo that accompanies every step, from cleansing to facial care.
Why NERO chose it
Soft, supple, comfortable skin: this is the goal that guides our ingredient combinations. Caviar extract forms part of this approach, alongside ingredients selected for their nourishing and softening qualities.
In Crème anti-âge and Baume après-rasage, it is combined with shea butter, jojoba, and grape seed oil. These emollient ingredients help soften the skin and contribute to the feel of each product.
This attention to the formula is reflected in the application: a melting texture, a soft, silky feel, and a non-greasy finish for the cream. Tangible qualities that give skincare its place in your daily routine.
Its role in the formulas
5 % caviar extract in Crème anti-âge.
2 % in Gel nettoyant antioxydant, Baume après-rasage, and Shampoing hydratant.
We chose to include this signature ingredient in all four products, developing combinations tailored to each use: a nourishing base for facial and aftershave care, and cleansing formulas for the skin and hair.
The black caviar and brown algae duo brings consistency to the collection. The oils, butters, and botanical extracts that accompany it give each formula its own qualities.
More about black caviar
INCI name: Caviar Extract.
What is caviar extract?
Caviar consists of sturgeon eggs. Extraction produces a preparation suitable for cosmetic use. Its composition depends on the process used: it does not necessarily retain the full richness of the raw material.
Why is it of interest to researchers?
Research has investigated caviar extract and DHA, an omega-3 fatty acid, in cell models. Effects were observed on certain mechanisms involved in collagen breakdown following UVB exposure [1].
These findings help explain the scientific interest in the ingredient. They do not constitute evidence of the efficacy of NERO skincare products, whose benefits depend on the complete formula.
What do the percentages mean?
The 5 % and 2 % levels refer to the amount of caviar extract incorporated into each formula. They do not indicate an omega-3 content. They give you a clear indication of the proportion of our signature ingredient in your skincare products.
Found in
Crème anti-âge · Gel nettoyant antioxydant · Baume après-rasage · Shampoing hydratant
Sources and context
[1] Lee et al., 2020 — Caviar Extract and Its Constituent DHA Inhibits UVB-Irradiated Skin Aging by Inducing Adiponectin Production. International Journal of Molecular Sciences. Study in cell models involving a specific extract and DHA.
Read the study ↗
Brown algae. The other pillar of our signature.
Brown algae contain molecules capable of retaining water, which explains the interest in their extracts for cosmetic use. Certain extracts are also studied for their antioxidant properties [1, 2].
At NERO, they accompany black caviar in all four skincare products. This marine duo is incorporated into formulas designed to leave your skin soft and comfortable, from cleansing to skincare.
Why NERO chose them
Hydration and suppleness are two complementary aspects of skin comfort. This complementarity guides our ingredient combinations.
Brown algae are of particular interest to us for their polysaccharides: long molecules, some of which attract and retain water. In a cosmetic formula, these properties may contribute to hydration in the skin’s outer layers [1].
In Crème anti-âge and Baume après-rasage, algae extract is combined with shea butter, jojoba, and grape seed oil. These emollient ingredients soften and smooth the skin. This combination addresses several needs in a single application: hydration, softness, and comfort during use.
Their role in the formulas
5 % algae extract in Crème anti-âge.
4 % in Shampoing hydratant.
2 % in Gel nettoyant antioxydant and Baume après-rasage.
We chose to combine algae with black caviar throughout the collection, with a composition tailored to each use: leave-on products for facial and aftershave care, and rinse-off formulas for cleansing and hair care.
These concentrations give you a clear indication of our formulas’ composition. The quality of each product then comes from the balance of the formula, its texture, and how well it suits your daily routine.
More about brown algae
INCI name listed in NERO documentation: Algae Extract.
How can they contribute to hydration?
Certain algae polysaccharides retain water and can form a surface film. They are therefore of interest to formulators for helping maintain hydration in the skin’s outer layers. One study of an extract from the brown alga Laminaria japonica assessed its effects on skin hydration and water loss [1].
Why are antioxidant properties also mentioned?
Certain brown algae extracts contain compounds capable of limiting oxidation reactions in laboratory settings. This activity varies according to the algae and the extraction process. It does not mean that a skincare product provides sun protection [2].
This research concerns specific extracts. It helps explain the cosmetic interest in brown algae without, on its own, demonstrating the benefits of NERO formulas.
What do the percentages mean?
They refer to the amount of algae extract incorporated into each product, rather than its polysaccharide or antioxidant compound content.
Found in
Crème anti-âge · Gel nettoyant antioxydant · Baume après-rasage · Shampoing hydratant
Sources and context
[1] Choi et al., 2013 — Effects of seaweed Laminaria japonica extracts on skin moisturizing activity in vivo. Journal of Cosmetic Science, 64(3), 193–205. Study of a specific extract, different from the extract used by NERO.
View the reference ↗
[2] Fitton et al., 2015 — Topical Benefits of Two Fucoidan-Rich Extracts from Marine Macroalgae. Cosmetics, 2(2), 66–81. Research on two characterized brown algae extracts; the reported antioxidant activity relates in particular to the polyphenol-rich Fucus extract.
Read the study ↗
Shea butter
Shea butter brings richness to skincare products and leaves the skin feeling soft and supple. Obtained from the kernels of the shea tree’s fruit, this plant butter is an emollient: it softens the skin’s surface and contributes to its comfort [1, 2].
Its consistency also contributes to the texture of a cream or balm. An ingredient whose value can be felt both on the skin and in the pleasure of application.
At NERO
20 % shea butter in Crème anti-âge.
18,5 % in Baume après-rasage.
Shea butter plays an important role in these two formulas. Combined with jojoba and grape seed oil, it forms a nourishing base that accompanies our signature duo, black caviar and brown algae.
In Crème anti-âge, it contributes to a melting texture that leaves the skin soft and silky, with a non-greasy finish. In Baume après-rasage, it contributes to the emollient richness of the formula, designed to restore comfort after shaving.
These combinations reflect a NERO formulation choice: bringing together ingredients that care for the skin and give the product a pleasant feel for everyday use.
More about shea butter
INCI name: Butyrospermum Parkii Butter.
How does it work on the skin?
Shea butter consists primarily of lipids. It helps smooth minor surface irregularities and leaves the skin feeling more supple. Like other fatty ingredients, it may also help limit water evaporation, complementing the action of ingredients that attract and retain water [1].
Does a rich formula necessarily leave a greasy film?
The feel depends on the complete formula. Combining shea butter with oils, emulsifiers, and other ingredients allows formulators to adjust consistency, spreadability, and finish. The percentage of shea butter alone therefore cannot predict how a product will feel during application.
What does the research say?
Publications describe its emollient uses and its relevance to skincare products intended to provide skin comfort. However, clinical studies remain limited and concern a variety of preparations: they do not, on their own, demonstrate the performance of NERO skincare products [1, 2].
Found in
Crème anti-âge · Baume après-rasage
Sources and context
[1] Lin, Zhong and Santiago, 2018 — Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils. International Journal of Molecular Sciences, 19(1), 70. Review of the evidence on plant oils and butters, including shea butter.
Read the publication ↗
[2] Cosmetic Ingredient Review, 2017 — Safety Assessment of Butyrospermum parkii (Shea)-Derived Ingredients as Used in Cosmetics. Safety assessment and description of cosmetic uses; does not constitute evidence of the efficacy of NERO products.
Read the report ↗
Jojoba
Jojoba brings softness and suppleness to the skin. Its distinctive feature: this plant “oil” consists primarily of liquid waxes, making it an ingredient valued for its emollient qualities and feel [1].
At NERO, it contributes to the balance between a product’s richness and the pleasure of application.
At NERO
9 % jojoba in Crème anti-âge.
10 % in Baume après-rasage.
Jojoba plays an important role in the emollient base of our two facial skincare products. Its role is to soften and smooth the skin while contributing to the formula’s spreadability.
We combine it with shea butter and grape seed oil. Shea butter provides consistency; liquid jojoba contributes to the product’s glide. This complementarity allows us to develop a nourishing texture that spreads easily over your skin.
In Crème anti-âge, this combination contributes to a melting texture, a silky feel, and a non-greasy finish. In Baume après-rasage, it supports the aim of providing comfort after shaving.
Alongside black caviar and brown algae, jojoba illustrates the attention NERO pays to the base of its formulas: the ingredients that also determine softness, texture, and the quality of everyday application.
More about jojoba
INCI name: Simmondsia Chinensis Seed Oil.
Why is it described as a liquid wax?
Obtained from jojoba seeds, this ingredient consists primarily of wax esters, a family of lipids. Its composition therefore differs from that of many plant oils, which consist mainly of triglycerides. Nevertheless, it remains liquid at room temperature [1].
How does it work on the skin?
Jojoba forms a lipid film on the surface that helps soften and smooth the skin. It may also help limit water loss. It therefore complements ingredients that attract and retain water in the skin’s outer layers [1, 2].
Does a wax feel thick on the skin?
Here, the term describes its composition, rather than a solid texture. Jojoba is liquid and can be incorporated into skincare products with a variety of consistencies. The finish depends on its combination with other ingredients: a formula rich in fatty ingredients can therefore be developed to leave a pleasant feel.
What does the research say?
Publications describe its distinctive composition and emollient uses. Clinical evidence varies according to the preparations studied and does not, on its own, demonstrate the performance of NERO skincare products [1, 2].
Found in
Crème anti-âge · Baume après-rasage
Sources and context
[1] Gad et al., 2021 — Jojoba Oil: An Updated Comprehensive Review on Chemistry, Pharmaceutical Uses, and Toxicity. Polymers, 13(11), 1711. Review of jojoba’s composition, properties, and uses.
Read the publication ↗
[2] Lin, Zhong and Santiago, 2018 — Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils. International Journal of Molecular Sciences, 19(1), 70. Review of the evidence on plant oils applied to the skin, including jojoba.
Read the publication ↗
Grape seed oil
Grape seed oil contributes to skin softness and the feel of skincare products. Naturally rich in linoleic acid, an omega-6 fatty acid, it is used for its softening qualities [1].
At NERO, it accompanies black caviar and brown algae in all four skincare products. It contributes both to the richness of our facial skincare products and to the texture of our cleansing formulas.
At NERO
9 % in Crème anti-âge.
10 % in Baume après-rasage.
28 % in Gel nettoyant antioxydant.
4 % in Shampoing hydratant.
In Crème anti-âge and Baume après-rasage, we combine it with shea butter and jojoba. This trio helps soften and smooth the skin while giving the textures their richness and ease of application.
In Gel nettoyant antioxydant and Shampoing hydratant, it brings its softening qualities to formulas designed for cleansing. Cleansing agents remove impurities during rinsing; the oil contributes to the product’s feel and balance.
Grape seed oil thus illustrates a NERO choice: giving as much attention to the ingredients that shape the texture as to the extracts that define the collection’s signature.
More about grape seed oil
INCI name: Vitis Vinifera Seed Oil.
How does it work on the skin?
This oil consists primarily of triglycerides, lipids whose fatty acids include linoleic acid. Used as an emollient—an ingredient that softens and smooths—it helps make the skin feel softer [1, 2].
Why include an oil in a cleanser?
A formula can cleanse while incorporating softening ingredients. The oil does not replace cleansing agents: it contributes to the texture and the sensations during application. Comfort after rinsing depends on the complete formula and how it is used.
Grape seed oil and grape seed extract: what is the difference?
The oil is the fatty fraction of the seeds. Depending on how it is produced, an extract may concentrate other substances, particularly polyphenols. Results obtained with a polyphenol-rich extract therefore cannot automatically be attributed to the oil.
What does the research say?
Publications document its composition and emollient use. Clinical evidence on the application of the oil alone to the skin remains limited. It does not support attributing to the oil the anti-wrinkle effects sometimes studied with other grape-derived preparations [1].
Found in
Crème anti-âge · Gel nettoyant antioxydant · Baume après-rasage · Shampoing hydratant
Sources and context
[1] Lin, Zhong and Santiago, 2018 — Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils. International Journal of Molecular Sciences, 19(1), 70. Review covering grape seed oil and the limitations of the evidence on its application to the skin.
Read the publication ↗
[2] Cosmetic Ingredient Review — Vitis vinifera (grape) seed oil. Reference page and access to safety assessments; does not constitute evidence of the efficacy of NERO skincare products.
View the reference page ↗
Collagen
Well-hydrated skin feels more pleasant to the touch. In cosmetics, collagen is of interest for its ability to retain water and form a surface film, thereby contributing to hydration in the skin’s outer layers and comfort during use [1].
At NERO, it complements our signature duo, black caviar and brown algae, in all four formulas in the collection.
At NERO
1,5 % in Crème anti-âge and Shampoing hydratant.
2 % in Gel nettoyant antioxydant and Baume après-rasage.
In Crème anti-âge and Baume après-rasage, collagen accompanies shea butter, jojoba, and grape seed oil. The oils and butter provide softness and suppleness; collagen complements this combination through its water-retaining and surface film-forming properties.
This complementarity allows us to address several aspects of comfort: hydration in the skin’s outer layers, softness to the touch, and the sensation left by the texture.
Also present in Gel nettoyant antioxydant and Shampoing hydratant, it is incorporated into rinse-off formulas, whose use and contact time differ from those of a cream or balm.
More about collagen
Name listed in NERO ingredient compositions: Collagen.
How does it contribute to hydration?
Collagen is a protein with an affinity for water. Depending on its form and the preparation used, it can retain water and form a film on the skin’s surface. These properties explain its use in products intended to provide hydration and skin comfort [1].
Why combine it with oils and butters?
A formula’s comfort relies on complementary ingredients. Fatty ingredients soften and smooth the skin. Ingredients capable of retaining water contribute to hydration in its outer layers. Their combination contributes to the product’s feel and application qualities.
Does it work like the collagen naturally present in the skin?
Collagen in the dermis forms a supporting structure. Whole collagen applied to the surface does not replace these deeper fibers: its cosmetic role mainly concerns the skin’s surface. Studies on ingested or injected collagen, or on specific peptides, therefore do not demonstrate the performance of NERO skincare products [1].
Found in
Crème anti-âge · Gel nettoyant antioxydant · Baume après-rasage · Shampoing hydratant
Sources and context
[1] Jadach, Mielcarek and Osmałek, 2024 — Use of Collagen in Cosmetic Products. Current Issues in Molecular Biology, 46(3), 2043–2070. Review distinguishing between forms of collagen, their properties, and their routes of use.
Read the publication ↗
Guarana
Guarana brings a botanical dimension to NERO’s marine signature. Its extracts are of research interest for their polyphenols, compounds some of which show antioxidant activity in laboratory studies [1, 2].
In our skincare products, guarana extract joins a selection of fruits and flowers that accompanies black caviar and brown algae.
At NERO
1,5 % guarana extract in Anti-Aging Face Cream.
1 % in Aftershave Balm.
0,5 % in Antioxidant Cleansing Gel.
2 % in Moisturizing Shampoo.
We combine guarana with rowan, calendula, chamomile, and allantoin. This selection reflects the focus on softness and comfort described in our product literature.
In the cream and balm, it complements the nourishing base, which includes shea butter, jojoba, and grape seed oil. In the gel and shampoo, it accompanies formulas designed to cleanse gently.
Guarana is therefore part of a formulation choice shared by all four products: bringing together marine and botanical extracts, then tailoring their combination to the needs of facial care, shaving, and hair care.
More about guarana
INCI name: Paullinia Cupana Fruit Extract.
Why is it of interest in cosmetics?
Guarana extracts contain polyphenols studied for their ability to limit certain oxidation reactions. Their composition depends on the part of the plant used and the extraction process [1, 2].
The studies cited concern seed extracts, whereas NERO documentation lists a fruit extract. They help explain the scientific interest in the plant without demonstrating the precise properties of our extract or the efficacy of NERO skincare products.
Guarana and caffeine: what is the difference?
Guarana extract is a mixture of plant constituents; caffeine is a defined substance. Our ingredient lists mention them separately. The extract concentration therefore does not correspond to a caffeine percentage.
What do the percentages mean?
They refer to the amount of extract incorporated into each formula, without specifying its polyphenol or caffeine content. They give you a clear indication of its presence in the products.
Found in
Anti-Aging Face Cream · Antioxidant Cleansing Gel · Aftershave Balm · Moisturizing Shampoo
Sources and context
[1] Basile et al., 2005 — Antibacterial and antioxidant activities of ethanol extract from Paullinia cupana Mart. Journal of Ethnopharmacology, 102(1), 32–36. Laboratory research on an ethanolic seed extract.
Read the publication ↗
[2] Antioxidant capacity and in vitro prevention of dental plaque formation by extracts and condensed tannins of Paullinia cupana, 2007 — Phytotherapy Research. Experimental evaluation of guarana extracts and fractions; does not constitute evidence of efficacy on the skin.
View the reference ↗
