Bacteriostatic water for cosmetic formulation

Distilled water has no preservative: once opened it gets contaminated within hours. Bacteriostatic water includes 0,9 % benzyl alcohol that keeps the bottle usable for weeks. We cover this in depth in our comparison guide.

Once opened, use it within about 4 weeks and always keep it closed, in a cool place away from direct light. Details and best practices in our guide on storage.

Exclusively for cosmetic formulation and external technical uses. Not suitable for consumption or for any use other than the one stated on the label.

We ship from Spain within 24/48 working hours with a tracking number.

Yes, with every order you can request an invoice with your details.

It depends on how much you use in each preparation, but a 10 ml bottle usually lasts for several formulations over the weeks following opening.

It's not essential. It's enough to keep it in a cool, dry place away from direct light. Cold offers no extra benefit and can encourage condensation when you open the bottle.

Saline solution is a salt solution with no preservative, meant for occasional irrigation or cleaning. Bacteriostatic water includes benzyl alcohol and is designed to be reused across several preparations without losing stability.

Unopened and stored under suitable conditions, it keeps its properties until the expiry date shown on the label. Once opened, the window drops to about 4 weeks.