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The characteristics of the pilonidal sinus that are associated with recurrence have scarcely been investigated in the literature. This study aims to evaluate the outcomes of patients with sacrococcygeal pilonidal sinus disease who were managed by a non‐operative technique using Salih's preparation. This study also tries to classify the patients according to the features that determine the outcome of the intervention. This is a single‐group cohort study that enrolled consecutive patients that had pilonidal sinus. All the patients were managed using Salih's preparation. The patients were seen at the clinic 6 weeks after the intervention to record data of recurrence. The Statistical Package for the Social Sciences (SPSS) Version 25 was used for coding and analysing the data. Test of significance and odds ratio were calculated for all of the features. The total number of patients receiving Salih's preparation was 12 123 cases, of which only 3529 patients were included in this study. The mean age of the participants was 26.95 years, ranging from 14 to 55 years. The most significant factor related to the recurrence was the presence of an abscess. After summation of all odd ratios, the percentage of each one from the total was calculated, and accordingly, the patients were divided into three classes. Non‐operative methods using a preparation with antimicrobial and sclerosing properties can be an alternative for surgical intervention with a lower risk of recurrence. Classification of patients based on specific criteria can give clinicians and even patients themselves a vision of the chance of recurrence and treatment success. [ABSTRACT FROM AUTHOR]