Why Choose a Solid Shampoo?

Why Choose a Solid Shampoo?

By Bertrand Michaud · 7 May 2026 · 4 min

Cosmeticherry published on 7 May 2026 · the editors, our method

In brief

  • Le shampoing solide réduit les déchets plastiques jusqu'à 80 % par rapport au shampoing liquide.
  • Il est plus économique : son coût peut être jusqu'à 30 % inférieur à celui d'un shampoing liquide.
  • Sa composition naturelle, sans silicones ni sulfates agressifs, convient à tous les types de cheveux.
  • Compact et léger, il est idéal pour les voyages et n'est pas soumis aux restrictions aéroportuaires.

Are you considering switching to solid shampoo but still have questions about its effectiveness and real benefits? In this article, discover why more and more people are adopting this eco-friendly, economical, and practical alternative for their hair.

Environmental Impact of Solid Shampoos

Definition: Le shampoing solide est un shampoing concentré en actifs, sans eau, qui se présente sous forme de pain et s'utilise en le frottant sur cheveux mouillés. Contrairement au shampoing liquide qui contient entre 15 % et 25 % d'eau, il dure plus longtemps et nécessite moins de produit.

Solid shampoo is an increasingly popular alternative thanks to its low environmental impact. Unlike liquid shampoos, it doesn’t need a plastic bottle. Most of the time, it comes in recyclable or even compostable cardboard, which significantly reduces plastic waste.

On average, switching to solid shampoo can cut this waste by 80%.

Its manufacturing is also more environmentally friendly. Conventional shampoos contain a large amount of water, while solid shampoo uses much less during production. This helps preserve this precious resource and avoids the addition of chemical preservatives often necessary in liquid products.

By choosing a solid shampoo, you make a simple but significant gesture for the planet. Less plastic and less wasted water: a small change in your routine that can have a big impact on the environment.

Cost-effectiveness and Durability of Solid Shampoos

Solid shampoos also stand out for their cost-effectiveness and durability. They may seem more expensive to buy, but they often prove more cost-effective in the long run. A single solid shampoo can last as long as two bottles of liquid shampoo.

Beyond their longevity, these shampoos help you save money. Spread over their usage period, their cost can be up to 30% lower than that of liquid shampoos. A real advantage for your wallet, especially if you're looking to reduce your expenses.

Comparaison entre le shampoing solide et le shampoing liquide
Critère Shampoing solide Shampoing liquide
EmballageCarton recyclable ou compostableFlacon en plastique
Teneur en eauAucuneEntre 15 % et 25 %
Concentration en actifsPlus concentréMoins concentré
Durée d'utilisationDure aussi longtemps que deux flaconsDurée standard
Coût sur la période d'utilisationJusqu'à 30 % moins cherPlus cher
Transport aérienNon soumis aux restrictionsSoumis aux restrictions
MoussePeut produire moins de mousseMousse rapidement

Natural Composition of Solid Shampoos

Solid shampoos stand out for their natural, gentle composition. Mild surfactants like Sodium Coco Sulfate cleanse without irritating the scalp. First-cold-pressed vegetable oils, such as coconut oil or argan oil, deeply nourish and protect hair. These ingredients prevent irritation and suit even sensitive scalps.

Formulas can also include clays or plant powders to purify and regulate sebum. Essential oils like lavender or tea tree add benefits and a natural fragrance. Free of aggressive silicones or sulfates, these products preserve hair health while respecting the environment.

Pour compléter votre routine capillaire naturelle, découvrez les bienfaits des huiles sèches pour les cheveux.

Adaptability to Different Hair Types

Solid shampoos adapt to all hair types, thanks to specific formulations. For dry hair, opt for ingredients like shea butter or argan oil, which nourish and add shine.

Normal hair benefits from oils like almond or sunflower, as well as green clay to regulate sebum. For oily hair, choose shampoos containing white clay or essential oils like tea tree, which absorb excess sebum and cleanse the scalp.

These products, free of sulfates and silicones, care for your hair while respecting nature.

Si vous êtes sujet aux démangeaisons du cuir chevelu, apprenez à comprendre et traiter les démangeaisons du cuir chevelu.

Le shampoing solide est un allié pratique pour un usage quotidien et en voyage.

Words from une esthéticienne

Ease of Use and Transport

Solid shampoo is a practical ally for daily use and travel. Compact and lightweight, it easily fits into a toiletry bag without taking up much space. Unlike liquid shampoos, it won't leak in your luggage.

It's also not subject to airport restrictions, which greatly simplifies cabin transport. Using it is simple: wet your hair, slide the bar over wet hair, massage to lather, and rinse thoroughly.

To protect it from humidity, store it in a small airtight box or a soap bag or net. Its lifespan is longer than that of classic versions, making it an economical and durable choice.

What are the Benefits of a Solid Shampoo?

Solid shampoos bring benefits for your hair and for the environment.

  • Natural Composition: made from natural and organic ingredients, they are gentle on the scalp and avoid harsh chemicals.
  • Adaptability: specific formulas exist for each hair type, whether dry, oily, colored, or sensitive.
  • Practical: lightweight and compact, they are perfect for travel and won't leak in your luggage.

Tout comme pour les cheveux, le soin du visage mérite une attention particulière : découvrez quel est le rôle du sérum visage.

What we keep: Le shampoing solide offre des bénéfices pour les cheveux et l'environnement : composition naturelle, adaptabilité à tous les types de cheveux et praticité pour les voyages.

What is the Difference between a Solid Shampoo and a Liquid Shampoo?

Solid shampoo and liquid shampoo differ mainly in composition and use. Solid shampoo is more concentrated in active ingredients, which makes it more effective. It contains no water, unlike liquid shampoo, which contains between 15% and 25%. A solid shampoo therefore lasts longer and requires less product for the same result.

In use, solid shampoo must be moistened before application, while liquid shampoo can be used directly. Liquid shampoo lathers quickly and rinses easily, whereas solid shampoo may produce less lather and require an adjustment period.

Finally, solid shampoo is often more environmentally friendly: it avoids plastic packaging and uses eco-friendly materials.

To learn more about these responsible products and benefit from a wide range of choices, discover Unbottled.

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Frequently asked questions

Quel est l'impact environnemental du shampoing solide ?

Le shampoing solide n'a pas besoin de flacon en plastique et se présente le plus souvent dans un emballage en carton recyclable ou compostable. En moyenne, l'adopter permet de réduire les déchets plastiques de 80 %.

Le shampoing solide est-il plus économique ?

Bien qu'il semble plus cher à l'achat, un seul shampoing solide peut durer aussi longtemps que deux flacons de shampoing liquide. Rapporté à sa période d'utilisation, son coût peut être jusqu'à 30 % inférieur.

Le shampoing solide convient-il à tous les types de cheveux ?

Oui, il existe des formulations spécifiques pour chaque type de cheveux. Pour les cheveux secs, on privilégie le beurre de karité ou l'huile d'argan, pour les cheveux normaux les huiles d'amande ou de tournesol et l'argile verte, et pour les cheveux gras l'argile blanche ou les huiles essentielles de tea tree.

Comment utiliser un shampoing solide ?

Il suffit de mouiller les cheveux, de faire glisser le pain sur les cheveux mouillés, de masser pour faire mousser puis de rincer abondamment. Pour le protéger de l'humidité, on le conserve dans une petite boîte hermétique ou un filet à savon.

Portrait of Bertrand Michaud

Who writes here?

Bertrand Michaud, editor in chief of Cosmeticherry. Every article starts from ingredient lists, instructions for use and safety precautions, which I read and compare before writing.

Articles touching on skin health rely on recognised public sources: they inform without replacing a medical consultation. Each article is dated and reviewed when information changes. To report an error or add a detail: Write to us