THE IMPORTANCE OF A WATER-FREE FORMULATION
Water, or humidity in the environment, is necessary for the growth of microorganisms in the preparations. Therefore, in cases where it is not present, there is no possibility of growth or contamination of the ointment.
Preservatives are chemical substances used to guarantee the sterility of the product during its time of use. Preservatives are products capable of destroying or inhibiting the growth of microorganisms, and despite their use at very low concentrations, they present cellular toxicity. Occasionally, damaging the ocular surface cells themselves, causing instability in the tear film, and reducing tear breakup time. This effect is just the opposite of what you want to achieve with the application of artificial tears.
VitA-Pos, thanks to its oily formulation, does not present water in its composition. In this way, the presence and growth of microorganisms is avoided, and in addition, the use of preservatives is not necessary.