INCI: Aqua, Sodium Benzoate, Potassium Sorbate

Aquaguard NK12 is an aqueous preservative suitable for use with both rinse-off and leave-on products.

It has a broad spectrum of activity and is effective against bacteria, yeast, mould and fungi. The preservative is supplied as an easy to use, readily dispersible liquid which is alcohol and solvent free. Aquaguard NK12 is designed for use in skin friendly formulations with pH values up to 5.5.

Aquaguard NK12
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Thiazolinone Free
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Formaldehyde Free
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Preservative Free
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Recommended Applications

In Use Concentrations ISCA recommendation EU Cosmetic Regulation (max)
Leave-on 1.0 – 1.9 1.96 %
Rinse-off 1.0 – 3.0 5.35 %
Formulation guidelines
pH (effective range) 2.0 – 5.5
Solubility (Water) Fully soluble
Solubility (Glycols) Fully soluble
Maximum Process Temperature 80 °C
(avoid prolonged periods at high temperature)
General information

Aquaguard NK12 is compatible with most personal care ingredients.

It is suitable for use in low pH formulations, but will lose efficacy if the pH rises above 5.5.

The product as supplied may change in appearance from yellow to brown on storage, but no further discolouration occurs when it is used in the end product as long as the formulation remains acidic.