optiphen™ bsb-n preservative is a combination of benzoic and sorbic acids in benzyl alcohol. Ashland’s nature-identical preservatives are ideal solutions for products aimed at the Eco-aware consumer. This product is validated by ECOCERT according to the COSMOS-standard. Due to the organic acids, optiphen™ bsb-n preservative may be classified as a mild preservative. It is effective against Gram-positive and Gram-negative bacteria, yeasts and molds at acid pH values.

The product is also marketed under the trade name rokonsal™ bsb-n.

features and benefits

  • effective against gram-positive and gram-negative bacteria, yeast and mold
  • effective up to pH 5.5
  • global use
  • nature-identical combination
  • validated by COSMOS and NATRUE


leave-on ++
rinse-off ++
wet wipes +

++ recommended, + suitable

      • INCI
        Enter INCI name
        Benzyl Alcohol (and) Benzoic Acid (and) Sorbic Acid (and) Glycerin