Sodium hydroxide

If citric acid is yin, sodium hydroxide is yang. A cosmetic product must have an acidity comparable to the area of application for which it is intended. Acidity is measured by an indicator called pH. The skin has an acidic pH, of around 5.5. Any product intended to be used on the skin must therefore have a similar pH, around 5.5. To adjust the acidity, two substances are available: citric acid, which decreases the pH, and sodium hydroxide (sometimes called soda), which increases the pH. It is the right quantitative combination of the two that allows for obtaining the target value.

Products containing this ingredient 👇

No products found

Use fewer filters or clear all

Natural ? Yes. Boring? Never !

Between us gentlemen, aren't you fed up with products with synthetic odors and dubious compositions? Do you want to go back to nature, with healthy formulas that preserve your beauty capital?

We do too, which is why Monsieur BARBIER has rethought the design of products for men in order to imagine the most natural products possible, by carefully choosing each ingredient and each active ingredient, for an uncompromising balance between effectiveness, sensoriality and naturalness. Naturalness, yes, but not at the expense of style or pleasure.

In this approach, Monsieur BARBIER is one of the only brands for men to be members of COSMEBIO and subject to ECOCERT audits, for its Cosmos Nat labeled products. And all of our products are free from controversial ingredients, or ingredients of animal origin. Not even hurt ! Did you know that our Full Care oil was the first beard oil in the world to receive the Cosmos Nat label? In addition to being the first dry oil in its category, we will let you discover the benefits for yourselves.