Which LAVENDER is best/safest? The answer is: Lavender (Lavandula angustifolia - sometimes called Lavandula officinalis). ••Lavender Absolute has a moderate risk of skin sensitization & causes more reactions than Lavender EO. Max dermal use is .1%. •••Lavandin Absolute max dermal level is .03% ••Lavandin Essential Oil may inhibit blood clotting ((☻eeeek!!! I have some Blends w/this in it!)) ••Spike Lavender EO may be mildly neurotoxic, based on on camphor content. Max dermal use level 19%.