Sleep disturbance is one of the most common complaints of patients admitted to ICU. Insufficient sleep in intensive care units may be associated with environmental reasons such as excessive light at night, loud warning sounds and mechanical ventilation alarms, as well as non-environmental factors, including the situation at the time of admission. Sleep assessment is subjective in nature, so it is difficult to perform in the ICU. Since communication with the patient is prevented, clear information about perceived rest and disturbing factors cannot be provided. For this reason, night rest is an issue that is often forgotten and ignored. This study applied a mixture of lavender, medicinal chamomile and neroli oil (in 20 ml of sweet almond oil; lavender oil 2 drops, medicinal chamomile 4 drops, neroli oil 6 drops) to patients who were monitored in intensive care on high-flow and oxygen, once a day for three days. This study will be conducted to determine the effect of aromatherapy massage applied for a total of 30 minutes on sleep quality.