Original information from Kobashi Official Website:
Relaxing, refreshing, excellent for skin care - especially oily or blemished. Add 1 drop to cool boiled water as a mouthwash, and breath freshener.
LATIN NAME: Citrus bergamia.
SOURCE: cold expressed form fruit peel.
COLOUR: dark cloudy olive brown green.
ORIGIN: Ivory coast and Calabria Italy
AROMA: Sweet, citrus lemony mandarin like - with a fresh green note.
QUALITIES: Relaxing, refreshing, excellent for skin care - especially oily or blemished skin.
Do not use in the sun or under ultraviolet light as this oil is photo sensitive - absorbs sunlight. People with lighter skin may be 4x more likely to have a problem with skin redness if this oil is used on the skin while in sunlight.
True cold pressed Bergamot oil can contain wax sediment and a dark green brown cloudy colour.: This is the normal colour for cold pressed genuine Bergamot oil, even when fresh pressed. It has not oxidized, in fact Bergamot has a good shelve life unlike orange and grapefruit.
If you want it clearer then You may be thinking of Bergamot distilled.
You can't use cold pressed Citrus Oils on the skin, in the sun or ultraviolet rays, due to furanocoumarins ( bergapten, Psoralen ). There are many other oils that can be used in sunlight. Interestingly there is contradictory evidence: The people of Calabria Italy's Bergamot workers where most of the Bergamot is produce, pick and process Bergamot in the sun and seem to be very healthy. In fact, one of Kobashi suppliers said, he does not know of any cases where the workers had any health problems.
It seems as though Nature in the whole has balancing mechanism that are not there when you isolate one chemical.
Cell signalling pathways in the mechanisms of neuroprotection afforded by bergamot essential oil against NMDA-induced cell death in vitro.