Many of our
customers have asked why we use an emulsifier and preservative in our mists.
The short answer is that both of those ingredients insure the integrity of our
product and improve shelf life.
Polysorbate
20 as emulsifier:
Emulsifiers
are used to mix water with oil-soluble ingredients. Because essential oils
are not water-soluble, they float on top of the water if not emulsified. Using
an emulsifier also guarantees a uniform
mixture so that each spray contains the same amount of essential oils. In
non-emulsified water-based products, the essential oils float on top of the
water and can dissolve the plastic spray tube over several months.
To find the
best emulsifier for our mists, we consulted a formulations chemist working for
an organic body care products manufacturer. Polysorbate 20 was recommended
because it’s been used extensively in the cosmetics and food industries, and
considered nontoxic and nonirritating for use with both animals and humans.
Polysorbate 20 is made by combining the oleic acid in olive oil with sorbital.
Potassium
sorbate as preservative:
Although
many pure essential oils have antimicrobial properties, when water is present,
there is a possibility of mold. The same formulations chemist helped us find a
naturally-derived preservative that has been time-tested in the food and body
care industries, that is also nontoxic and nonirritating when used with animals
and humans.
Potassium
sorbate, which is derived from the mountain ash berry, extends shelf life as
much as 18-24 months (as opposed to 6 months).
Earth Heart wants to
provide the highest quality, safest products possible. We welcome your comments
and questions at vicki@earthheartinc.com or 847-551-1806.
