The stabilized oil-in-water emulsion is then used as the aqueous phase to prepare the oil-in- water-in-oil emulsion.

Also disclosed is a method for making such oil-in-oil emulsions.

The microemulsions may be oil-in-water, water-in-oil or bi-continuous.

There is also provided an oil in water emulsion and water in oil in water emulsion, made by the method.

The meta-stable composition converts from an oil-in-water (O/W) emulsion to a water-in-oil (W/O) emulsion upon rubbing.

The formulation can comprise a water-in-oil emulsion having the active emulsion polymer in an aqueous phase of the water-in-oil emulsion.

The weight ratio of the at least one non-ionic oil-in-water emulsifier to the at least one water-in-oil emulsifier is about 0.2 to about 2.0.

Suitable aqueous compositions may contain an oil phase, such as oil-in-water or water-in-oil emulsions.

According to the invention, the composition takes the form of a water-in-oil or oil-in-water emulsion, the bio-active system being included in the aqueous phase.

The solution or dispersion is emulsified in a polar solvent to form an oil-in-water or water-in-oil-emulsion that is held in an extraction chamber (104).

The hydrocarbons include a water-in-oil emulsion.

A water-in-oil emulsion composition is disclosed.

The invention also relates to the use of the matrix as a stabilising agent in the preparation of simple emulsions, e.g. of the water-in-oil type, or multiple emulsions, e.g. of the water-in-oil-in-water type.

Oil-in-water (O/W) and water-in-oil (W/O) microemulsions of fragrance product formulations are provided.

An oil-in-water-in-oil multiple emulsion, comprising an inner oily phase, an aqueous intermediate layer and an outer oily phase, which comprises one or more pesticides, is useful for controlling weeds, diseases and pests.