Bilgiye hızlı erişim:
In the cosmetics world, labels such as “natural,” “clean ingredients,” or “preservative-free” often create a positive impression in the eyes of consumers. However, these perceptions do not always align with scientific facts. One of the most common yet misleading myths in cosmetic science is the belief that “products without preservatives are healthier.”
In reality, preservatives used at appropriate and controlled levels are essential for ensuring the microbiological safety of a cosmetic product.
❌ Myth: “Preservative-free cosmetics are safer.”
Cosmetic products are complex emulsions containing water, oils, plant extracts, and various active ingredients. Especially in water-based formulations, microbial growth is highly likely—creating a risk of spoilage and potential harm to the user.
Therefore, preservatives are used to:
Protect the product from bacteria, mold, and yeast,
Extend the shelf life,
Ensure user safety throughout the product’s use.
Simply removing preservatives does not automatically make a product natural or harmless.
It depends on the formulation structure and microbial risk.
The need for preservatives in cosmetics is determined by factors such as:
Water activity (aw value): Products with high water content (e.g., moisturizers, toners, masks) require preservatives.
pH level: Extremely low or high pH may inhibit microbial growth but does not eliminate the need for preservatives.
Alcohol content: Products containing more than 20% alcohol (e.g., hand sanitizers) may be exempt from preservatives.
Natural antimicrobial agents: Ingredients like tea tree oil, propolis, or essential oils may have antimicrobial properties—but are rarely sufficient on their own.
Each formulation must be evaluated individually.
What Do Cosmetic Regulations Say?
Preservatives are not used arbitrarily—they are regulated within scientific limits.
According to the EU Cosmetics Regulation (EC 1223/2009) and Turkish Cosmetics Regulation:
Approved preservatives are listed in Annex V.
Each preservative has a maximum permitted concentration, depending on product type and area of application.
Some preservatives require allergenic labeling on packaging.
This means that preservatives used in cosmetic products are not only scientifically evaluated for safety, but are also subject to strict regulatory oversight.
We support you in the scientific validation of both preservative-containing and preservative-free cosmetic products.
Our services include:
✔ Preservative efficacy (challenge) testing
✔ Microbiological analysis
✔ MIC and disk diffusion tests to determine effective preservative dosages
✔ Label claim review and regulatory compliance evaluation
At Cosming, we help brands develop cosmetic products that are safe, scientifically supported, and legally compliant.
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