Organic preservative compound

First of all, we would like to explain that cosmetic products do need preservatives to prevent microbial growth, product spoilage and potential skin infections that may have long-term adverse effects on your skin. Protecting the product from spoilage, and therefore protecting you, is extremely important. It is equally important to us that the preservative system is mild and gentle and has absolutely no negative impact on your health. Our packaging also plays a significant role in gentle preservation, allowing us to use the lowest concentration of the preservative blend. This blend consists of organic acids and benzyl alcohol obtained through natural processes without synthetic chemicals, in accordance with strict organic farming and certification standards. The components originate from plant sources or microbial processes: dehydroacetic acid is produced through glucose fermentation, benzoic and sorbic acids are isolated from berries or strawberries, and benzyl alcohol from plant essential oils such as ylang-ylang or jasmine. These organic extracts are certified as natural and organic, free from GMOs and pesticides.

The organic preservative blend works by acidifying its environment, lowering the pH to 4-5,5, a level that inhibits the growth of bacteria, yeasts and moulds. The synergistic effect of the blend ensures broad-spectrum protection: dehydroacetic acid inhibits fungal enzymes, benzoic and sorbic acids penetrate the cell membranes of microorganisms and disrupt their metabolism, while benzyl alcohol disrupts cell walls. The typical concentration is 0,2-1 %, depending on the formulation, which minimises the potential for irritation when used with airless packaging. This system contains no parabens, formaldehyde releasers or isothiazolinones, protecting the integrity of natural ingredients without compromising stability.

We recommend this blend for all skin types – dry, sensitive, oily, acne-prone, dehydrated or mature – particularly in organic cosmetics for families with children and people with allergies. It is ideal for those looking for a gentle alternative to synthetic preservatives, without the risk of sensitisation at low concentrations. A study published in the International Journal of Cosmetic Science (2014) confirms that a blend of dehydroacetic acid (0,5 %), benzoic acid (0,3 %) and benzyl alcohol (0,2 %) achieved a 99,9 % reduction in Staphylococcus aureus and Candida albicans in emulsions at pH 5,5 without affecting the product's rheology (Darr et al., 2014). Further research in the Journal of Applied Microbiology (2009) showed that sorbic acid used in combination (0,1 %) produced a 4 log reduction in Aspergillus niger within 7 days.

Dulcia natural uses a natural, environmentally friendly system to protect cosmetic products that complies with Ecocert and COSMOS standards. It has been developed to reduce the risk of bacterial contamination. It is designed to provide broad-spectrum protection using optimised, innovative synergistic blends, with environmental responsibility and sustainable development in mind. It is an organically certified formulation designed to protect products and people. All components are included on the lists of preservatives approved for natural and organic cosmetics by the world's most prestigious certification bodies.