Here are the list of Essential Oils that can cause skin irritation when added to Bath or Body Oils. If you have a very sensitive skin, purchasing Natural Cosmetics with Fruit or Botanical Extracts are recommended.

basil,
cajuput,
camphor,
carnation,
cedarwood,
cinnamon,
citronella,
clove,
eucalyptus,
lemon,
lemongrass,
melissa,
orange,
oregano,
peppermint,
pine,
rosemary,
tea tree,
thyme,
verbena,

Sensitive skin can easily irritated by these Essential Oils. Dosages should not be higher than 4 drops in the bath or 5 to 10 drops in 2 oz of Vegetable Oils. There may be more essential oils that are known to irritate the skin. For High Bloos pressure- hyssop, rosemary, sage or thyme should be used only in small doses.

During pregnancy, do not use the following Essential oils in high doese in baths or body oils, since they have an abortive effects.

basil,
camphor,
carrot seed,
cedarwood,
clove,
frankincense,
hyssop,
juniper,
myrrh,
oregano,
rosemary,
sage,
verbena,

ALSO; clary sage,
geranium,
peppermint,
rose,
rosemary,

Other oils; pennyroyal,
sassafras,
clove,