ObjectiveThe aim of the research was conducted as a randomized controlled interventional study to determine the effect of lavender/mint essential oils placed in stoma bags on odor removal, life satisfaction and stoma compliance in individuals with colostomy. MethodThe research population is patients with permanent colostomy registered in a university hospital's stoma therapy unit. The sample consisted of 60 (20 lavender oil, 20 peppermint oil, 20 control group) patients who met the sampling criteria and voluntarily agreed to participate in the study. In the evaluation of the data the 'Numerical Evaluation Scale' (NES), the 'Satisfaction with Life Scale (SLS), and the 'Ostomy Adjustment Scale' (OAS-23) were used. ResultsThe lavender oil and peppermint oil groups had lower mean odor intensity, mean scores, higher life satisfaction, and stoma compliance scores than the control group. A statistically significant difference was found between the groups (p<0.05). In comparisons made within the groups, statistically, significant differences were found in the mean scores of odor intensity level, life satisfaction, and stoma compliance after the process (p<0.05). ConclusionIt was determined that lavender/peppermint oil placed in the stoma bag in patients with colostomy decreased the level of odor intensity, and increased life satisfaction, and stoma compliance. The trial was registered in the Clinical Trial (ClinicalTrials.gov ID: NCT05716711