Petitgrain is an oil from the branches, leaves and unripe fruit of the bitter orange. In skin care, it is vitalizing, antiseptic and has a deodorizing effect and is particularly suitable for personal care products for acne and against strong perspiration. After treatment with petitgrain, however, the skin should never be exposed to the sun, as it may cause severe skin irritation.
In aromatherapy, this oil relieves depression, sparks memory, is inspiring, tonic and aids concentration. It relieves anxiety and emotional stress, helps with irritability and mood swings and relieves nervousness, sleeplessness and sadness. It promotes vitality and harmony.

see. Markus Schirner 2002 "Aromatic Oils" Schirner Verlag, Darmstadt, 4th edition 2011