Essential oil caution

Toxic and Phototoxic Essential Oils

Phototoxic Essential Oils 

angelica root
bergamot (unless it's specified as "bergaptene-free")
cassia
cumin
ginger
lemon
lime (just the cold expressed oil, not the steam distilled)
lovage
mandarin (possibly)
orange (unless it's a "folded" orange - luckily, most are)
verbena 

Toxic Essential Oils - Use With Cautionanise (star) 

aniseed
bay laurel
bay (West Indian)
calamintha
camphor (white)
cassia
cedarwood (Virginian)
cinnamon (leaf)
clove (bud)
coriander
eucalyptus
fennel (sweet)
hops
hyssop
juniper
nutmeg
parsley
pepper (black)
sage (Spanish)
tagetes
tarragon
thyme (white)
turmeric
valerian

Sun sensitivity (phototoxicity) and essential oils.Essential oils that may cause sun sensitivity: sun 

sensitivity essential oils phototoxicity of essential oils 

Angelica
Bergamot *
Bitter orange (cold pressed)
Cumin
Dill
Grapefruit (cold pressed)
Lemon (cold pressed as well as distilled)
Lemon verbena
Lime (cold pressed as well as distilled)
Orange
Mandarin
Tagetes
Tangerine (cold pressed)
Yuzu
* Unless it is bergaptene-free oil - sold as Bergamot FCF.