Based on its formula, is this solid shampoo safe for sensitive or dry scalp types?

The bar uses sodium coco‑sulfate, a strong surfactant that can be harsh on very dry or sensitive scalps, and mineral clays that may further strip moisture; however, the presence of gentle essential oils makes it generally suitable for normal to oily hair, and a patch test is recommended for sensitive skin.

What is the role of bentonite clay in this solid shampoo?

Bentonite clay acts as an oil‑absorbing agent that helps clarify the scalp and reduce greasiness, providing a deep‑clean feeling, but its strong absorbent properties can leave dry hair feeling tighter if used excessively.

How often should the bar be used and does it contain any controversial chemicals?

Use the bar like a traditional shampoo, daily or 2–3 times a week depending on hair type; it contains sodium coco‑sulfate and sodium hydroxide, which some consumers consider harsh surfactants, though the product remains COSMOS organic certified and is not fully vegan.

Cosmonaturel • 85g

Shampoing solide

Hair

Product Insights

The 85 g solid shampoo from Cosmonaturel is certified COSMOS organic and composed of 100 % naturally derived ingredients, with 16 % sourced from organic farming and a blend of essential oils such as lavender, eucalyptus and mint that aim to refresh the scalp. Its cleansing power relies on sodium coco‑sulfate and stearyl alcohol, while additives like sodium hydroxide, bentonite and kaolin help adjust pH and absorb excess oil, which can be effective but may be too stripping for very dry or sensitive scalps. Because the bar contains synthetic surfactants and a small proportion of mineral clays, users with delicate skin should patch‑test first, but those seeking an eco‑friendly, zero‑waste alternative will appreciate its biodegradable format and organic certification.

Comparative Analysis

Positioned as an eco‑friendly, organic‑certified solid shampoo, this French‑made bar targets environmentally conscious consumers looking for a zero‑waste hair‑care option with natural essential oils and a biodegradable formula.

Ingredients

SODIUM COCO-SULFATE, STEARYL ALCOHOL, COCOS NUCIFE - RA (COCONUT) OIL*, LAVANDULA ANGUSTIFOLIA (LAVENDER) WATER*, URTICA DIOICA (NETTLE) EXTRACT*, CITRIC ACID, BENTONITE, KAOLIN, SODIUM HYDROXIDE, EUCALYPTUS DIVES LEAF/TIWG OIL*, EUCALYPTUS CITRIODORA LEAF OIL*, MENTHA ARVENSIS LEAF OIL*, DECYL GLUCOSIDE, AQUA (WATER). *Ingrédient issu de l'Agriculture Biologique / Ingredient from Organic Farming. 100% du total est d'origine naturelle / natural origin of total. 16% du total des ingrédients sont issus de l'Agriculture Biologique / of the total ingredients are from Organic Farming. COSMOS ORGANIC certifié par COSMECERT selon le référentiel COSMOS disponible sur / COSMOS ORGANIC certified by COSMECERT according to COSMOS standard available at http://cosmos-standard.org.

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