are not to be used in tattooing, piercing or permanent cosmetics. Choice of a sterilization method is not arbitrary but is based on the manufacturer's recommendations and the limits of the process.
READ THE LABEL: sterilizing liquids are used only for those items that cannot be heat sterilized.
A chemical germicide (such as Glutaraldehyde) loses potency as it is used. The rate of loss of potency
depends on patterns of intensity of use and on the
age of the solution.
It does not mean it
retains effectiveness for 14 or 28 days.