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Bienfaits zinc cheveux.

The benefits of zinc for hair.

Dandruff or scales are one of the most noticeable signs of an imbalance in scalp health. Zinc is the key compound to use to avoid this type of hair discomfort. Let's focus.


Essential knowledge about zinc.

Zinc is a metallic particle symbolized as "Zn" and holds the atomic number 30 in the periodic table of elements. In metallurgy, it is a component of brass (zinc and copper), but it is also present in the human body, albeit in small quantities (around 2 to 3 grams), distributed in the muscles, bones, liver, and skin. It is considered a trace element, meaning it is a component essential for the proper functioning of the body. Zinc plays a role in DNA synthesis, aids in the production of certain proteins, and contributes to the balance of cognitive functions. A deficiency in zinc could exacerbate inflammatory phenomena.

It's important to note, this trace element cannot be stored by the body. Therefore, to reap its benefits, regular consumption of zinc-rich foods is essential. The food highest in zinc is the oyster, but there are others such as the offal, red meat, whole grain bread, and eggs.

When applied topically, zinc provides several benefits to the skin and hair.It is included in the composition of certain hair care products in various forms, such as zinc gluconate and zinc PCA.

The benefits of applying zinc to hair, what are they?

Zinc and its derivatives are primarily recommended for the health of the scalp, which directly influences the condition of the hair. Two main actions are associated with the external application of zinc .

  • Combatting dandruff.

    Zinc possessespurifying andantibacterial properties. It helps regulate sebum production, thus preventing the excess that leads to oily and imbalanced scalps. Consequently, it helps limit the occurrence of oily dandruff, and is therefore found in many hair care products targeting this issue.

    It should be noted that it is primarily the zinc pyrithione (INCI: ZINC PYRITHIONE) that was found a few years ago in the main anti-dandruff hair treatments. However, this active ingredient is now highly controversial ( suspected mutagen, potential reproductive toxicant, potential aquatic ecotoxicity) and above all prohibited in Europe (Annex II/1670 of the cosmetic regulation). Instead, zinc-PCA or zinc gluconate are now used, which are much gentler and pose no risks to health and the environment.

  • Limiting itchiness.

    Zinc has soothing properties. It acts as a regulator of interleukin 1-alpha, a mediator of inflammation. As such, it alleviates discomforts of the scalp such as itching, tingling, tightness, and other unpleasant sensations.

Due to its virtues, zinc is a component of ourpurifying hair serum. This product effectively eliminates oily dandruff over time. It therefore contains 4% of zinc PCA combined with nettle extract, also known for its purifying and sebum-regulating properties. In addition to this, it contains essential oils of peppermint and eucalyptus globulus which, thanks to their antibacterial and antifungal virtues, help to sanitize the scalp by fighting against the proliferation of microorganisms responsible for dandruff.

It should be noted that oral supplementation of zinc, either through dietary supplements or simply through a diet rich in zinc (oysters, eggs, offal), effectively combats hair loss and alopecia.


  • PARK H. & al. The therapeutic effect and the changed serum zinc level after zinc supplementation in alopecia areata patients who had a low serum zinc level. Dermatology (2009).

  • TURNER G. A. Enhanced efficacy and sensory properties of an anti-dandruff shampoo containing zinc pyrithione and climbazole. International Journal of Cosmetic Science (2012).


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