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The category of preservatives includes substances that protect cosmetic products from the growth of bacteria, yeasts and moulds. Since most formulations contain an aqueous phase, preservatives are an essential part of any formulation that is intended to remain safe, stable and sensorially pleasing throughout the entire period of use.
At Handymade.co.uk you will find broad spectrum preservatives, natural alternatives certified by COSMOS and ECOCERT as well as multifunctional preservatives that combine an effect with moisturizing or softening properties. All products are of cosmetic quality, supplied with complete technical documentation (SDS, COA and IFRA standards).
When selecting a preservative, it is important to consider the pH of the formulation, the type of emulsion (O/V or V/O), the proportion of water and the presence of a tenside or chelator. The right combination of these factors will ensure long-term microbial stability without compromising texture or flavor.
Tip for manufacturers: for natural cosmetics, choose a combination of organic acids, glycols and plant derivatives; for conventional emulsions, a broad-spectrum system with a neutral pH setting is the optimal choice.
These systems provide comprehensive protection against bacteria, moulds and yeasts over a wide pH range (3-8). They are versatile and easy to use in most emulsions and gels. Popular examples are Cosgard and Euxyl PE 9010, which offer high stability at low dosage rates (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 natural certification. Euxyl K712, Euxyl K903 and Iscaguard IAF stand out in this group - all are gentle on the skin and effective in the pH range of 4 - 6. Ideal for moisturisers, toners and masks.
Products such as 1388 Eco Plus and Pentylene Glycol ECO represent the modern trend of "soft preservation". They combine moisturizing properties with antimicrobial activity and make it possible to formulate products without conventional preservatives. Gentle but effective protection for sensitive skin and baby cosmetics.
A new generation of preservatives, e.g. Spectrastat G2 Natural MB, offers high efficacy in low concentrations and excellent tolerability with active ingredients. It is stable over a wide pH range and compatible with emulsification and foaming systems. High stability with minimal impact on the texture and fragrance of the formulation.
1. Dosage: always follow the manufacturer's technical data sheet; for natural preservatives, it is necessary to verify the efficacy in a real formulation.2. pH and chelator: correct pH adjustment and inclusion of a chelator (Dermofeel PA-3) increases stability and broadens the spectrum of action.3. Synergy of ingredients: the combination of organic acids and glycols makes it possible to reduce the total dosage of active preservatives.4. Production hygiene: sterile utensils and clean containers are as important as the preservative itself.
Decide according to pH, water content and customer sensitivity. For conventional 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 introducing a new product or changing raw materials. The test verifies the formulation's resistance to microbial contamination and confirms the efficacy of the selected preservative.
Organic acids and their salts work in acidic pH (3.5 - 5.5), whereas systems such as Cosgard or Euxyl PE 9010 cover the range 3 - 8. Always measure the pH after emulsification and slightly acidify if necessary.
Yes, combining multiple active ingredients (organic acids, glycols, chelators) will broaden the spectrum and allow the overall dosage to be reduced. However, always verify compatibility and stability in a test under stress conditions.
