Our deodorant's key active ingredient: magnesium hydroxide

L’actif clé de notre déodorant : l’hydroxyde de magnésium

Magnesium Hydroxide: The Gentle Yet Effective Active Ingredient in Our Natural Deodorant for Men

In our artisanal deodorant for men, we've chosen a key ingredient: magnesium hydroxide. This mineral active is known for its ability to neutralize odors while respecting even the most sensitive skin. Here's where it comes from, how it's obtained, and why it's at the heart of our formula.

What is Magnesium Hydroxide?

Magnesium hydroxide (Mg(OH)2) is a mineral compound derived from magnesium, an element naturally present in the Earth's crust and in seawater. It comes in the form of a white, fine, and soft powder, perfectly suited for body care.

Unlike baking soda, which is often irritating, magnesium hydroxide is non-abrasive, not aggressively alkaline, and extremely well tolerated by the skin.

Where Does Magnesium Hydroxide Come From?

The main natural source of magnesium is brucite, a mineral mined in several regions around the world: Canada, United States, China, Russia, Greece.

Another common method involves obtaining magnesium hydroxide from seawater. This approach is particularly used in coastal regions where salt water is abundant.

How is it Produced?

1. Raw Material Extraction

Magnesium is extracted either:

  • from natural brucite (a magnesium-rich rock),
  • or from seawater through controlled precipitation.

2. Purification

The raw material is then purified to remove mineral impurities. This step ensures a cosmetic, stable, and safe final product.

3. Precipitation of Mg(OH)₂

Magnesium is converted into magnesium hydroxide by reaction with a source of hydroxide (often calcium hydroxide). The result: a very fine, soft, and non-irritating white powder.

4. Drying and Micronization

The product is then dried and micronized to obtain a light texture, ideal for solid or cream deodorants.

The Benefits of Magnesium Hydroxide for the Skin

1. Neutralizes Odors Without Blocking Perspiration

Magnesium hydroxide works by neutralizing odor-causing acids. It does not block perspiration—a natural process—but prevents bacteria from transforming sweat into unpleasant odors.

2. Gentle Alternative to Baking Soda

Baking soda can be too alkaline and cause redness or burning. Magnesium hydroxide, on the other hand, is much gentler and respects the skin's natural pH.

3. Non-Irritating and Suitable for Sensitive Skin

Thanks to its stable mineral structure, it does not penetrate the skin and does not cause inflammation. It is an ideal ingredient for sensitive, shaved, or irritated underarms.

4. Natural Antibacterial

It limits the proliferation of bacteria responsible for bad odors, without disrupting the skin's microbiome.

Why We Use It in Our Deodorant?

1. For Long-Lasting Effectiveness

Magnesium hydroxide offers long-lasting odor neutralization, even during physical activities or intense days.

2. To Respect Men's Skin

Underarms are often irritated by shaving, perspiration, or friction. This ingredient provides an effective yet non-aggressive solution.

3. For a Clean and Natural Formulation

At Les Soins du Barbu, we prioritize simple, safe, and effective ingredients. Magnesium hydroxide fits perfectly into this vision.

4. For a Pleasant Texture

It contributes to a soft, dry, and non-sticky texture, ideal for an artisanal solid deodorant.

Conclusion

Magnesium hydroxide is an essential ingredient in our natural deodorant for men. Gentle, effective, and skin-friendly, it neutralizes odors without irritation and without blocking perspiration. A choice consistent with our commitment to artisanal, natural, and high-performance men's cosmetics.

References

  • Environmental Working Group (EWG) – Safety assessment of Magnesium Hydroxide.
  • Journal of Cosmetic Science – Studies on magnesium compounds in deodorant formulations.
  • PubChem – Magnesium Hydroxide: properties, structure and applications.
  • Healthline – Comparison of magnesium-based deodorants vs bicarbonate-based formulas.