Geogard ECT

Other names: Preservative Eco, Mikrokill ECT, or Plantaserv M

A broad-spectrum cosmetic preservative system commonly used in skin, hair, and personal care products to protect against bacteria, yeast, and mold and extend shelf life.
It is popular especially in natural and clean beauty formulations because it’s ECOCERT- and COSMOS-approved and free from parabens, phenoxyethanol, isothiazolinones, and formaldehyde.

INCI: Benzyl Alcohol (and) Salicylic Acid (and) Glycerin (and) Sorbic Acid

Typical usage rate 1%

💧 Properties & Benefits

Broad-spectrum antimicrobial protection — helps prevent spoilage by bacteria, yeast, and mold.

Clean label / natural formulation friendly — approved by ECOCERT and COSMOS for natural/organic products.

Low odor and gentle profile, suitable for sensitive skin products.

Wide pH compatibility: effective in products with pH ~3–8, making it versatile for many formulations (creams, lotions, shampoos, serums, etc.).

Typically used at ~0.6–1.0 % of the total formula.

🧴 Use & Formulation Notes

Add during the cool-down phase (generally below ~45 °C) to avoid degrading the preservative.

Ensure the final product’s pH is within the effective range for preservation.

Works well in both leave-on and rinse-off products.