Polysorbate 20 is a coconut based, food grade emulsifier that can be used to make essential oils blend completely. I use this to make my water soluble blends and now you can have some to create your own blends. Just mix 50/50 with essential oils then add your eo/polysorb blend at a rate of 5-10 drops per ounce of fluid to make your own products. I recommend using only distilled water or hydrosols for your water base as tap water or herbal infusions will go bad quickly.
The bottle it comes in is a glass type plastic (PET) bottle and I will use a flip top cap as a closure. This cap is very easy to dispense the polysorb either a drop at a time or you can squeeze out a continuous stream.