Cesarean section (CS) is a common surgical procedure that can be lifesaving but leaves a permanent scar affecting postpartum recovery and quality of life. Purpose: To determine the impact of polarized light therapy (Bioptron) on scar formation post-CS. Subjects: Sixty primiparous women (aged 20–30 years, BMI ≤ 30 kg/m²) with post-CS abdominal scars aged 6 weeks–6 months were allocated from outpatient clinics at Benha University Hospital, Egypt. Methods: It was a prospective, randomized controlled trial. Participants were randomly and equally divided into two groups (n = 30). Group A received silicone-based cream twice daily for one month. Group B underwent Bioptron light therapy for 15 minutes, three sessions per week for one month, plus the same cream. BMI was measured by weight and height. Scar evaluation included the Modified Vancouver Scar Scale (mVSS), the Patient and Observer Scar Assessment Scale (POSAS) and scar extensibility measured with a modified adheremeter. Results: Within groups, both groups indicated a significant improvement in MVSS, POSAS, and scar extensibility after therapy compared to before therapy (p = 0.001). Between groups: before treatment demonstrated no significant change (p > 0.05). After treatment indicated a significant difference between groups, favoring group B (p = 0.001). Conclusion: Bioptron light therapy provides a significant therapeutic benefit in managing post-cesarean scars, and overall appearance, offering practical implications for improving scar management and suggesting potential directions for future research.