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The preservatives category includes substances that protect cosmetic products against the growth of bacteria, yeasts and molds. Since most formulations contain an aqueous phase, preservatives are an essential part of any formulation that is intended to remain safe, stable and sensorially pleasant throughout the entire period of use.
On Handymade.sk you will find broad-spectrum preservatives, natural alternatives certifiable according to COSMOS and ECOCERT, and multifunctional substances with a preservative effect that combine their action with moisturizing or soothing properties. All products are of cosmetic grade and supplied with complete technical documentation (SDS, COA and IFRA standards).
When selecting a preservative, it is important to take into account the pH of the formulation, the type of emulsion (O/W or W/O), the water content and the presence of surfactants or a chelating agent. The right combination of these factors will ensure long-term microbial stability without disrupting the texture or fragrance.
Tip for manufacturers: for natural cosmetics, choose a combination of organic acids, glycols and plant-derived derivatives; for standard emulsions, the optimal choice is a broad-spectrum system with a neutrally adjusted pH.
These systems provide comprehensive protection against bacteria, molds and yeasts over a wide pH range (3 – 8). They are universal and easy to use in most emulsions and gels. Popular examples include products such as Cosgard and Euxyl PE 9010, which offer high stability at low dosage (0.6 – 1 %). Reliable protection without affecting the appearance and fragrance of the finished product.
Natural and bio-based alternatives to synthetic preservatives are suitable for “clean beauty” products and cosmetics with a natural certificate. In this group, Euxyl K712, Euxyl K903 and Iscaguard IAF stand out – all are gentle to the skin and effective in the pH range 4 – 6. An ideal solution for moisturizing creams, toners and masks.
Products such as 1388 Eco Plus and Pentylene Glycol ECO represent the modern “soft preservation” trend. They combine moisturizing properties with antimicrobial activity and make it possible to formulate products without classic preservative substances. Gentle yet effective protection for sensitive skin and baby care products.
The new generation of preservatives, for example Spectrastat G2 Natural MB, offers high efficacy at low concentrations and excellent compatibility with active ingredients. It is stable over a wide pH range and compatible with emulsifying and foaming systems. High stability with minimal impact on the texture and fragrance of the formulation.
1. Dosage: is always governed by the manufacturer’s technical data sheet; for natural preservatives it is necessary to verify efficacy in the actual formulation. 2. pH and chelating agent: correct pH adjustment and inclusion of a chelating agent (Dermofeel PA-3) increases stability and broadens the spectrum of action. 3. Synergy of components: combining organic acids and glycols makes it possible to reduce the total dosage of active preservatives. 4. Manufacturing hygiene: sterile tools and clean containers are just as important as the preservative itself.
Make your decision based on pH, water content and customer sensitivity. For standard emulsions, broad-spectrum systems such as Cosgard or Euxyl PE 9010 are suitable; for natural products, Euxyl K712, Iscaguard IAF or Spectrastat G2 Natural MB are ideal.
Yes, it is recommended when launching a new product or when changing raw materials. The test verifies the resistance of the formulation to microbial contamination and confirms the efficacy of the selected preservative.
Organic acids and their salts function in an acidic pH (3.5 – 5.5), whereas systems such as Cosgard or Euxyl PE 9010 cover the range 3 – 8. Always re-measure the pH after emulsification and, if necessary, acidify slightly.
Yes, the combination of several active components (organic acids, glycols, chelating agents) broadens the spectrum and allows the total dosage to be reduced. However, always verify compatibility and stability in a stress test.
