Trial centre
proDERM Institute for Applied Dermatological Research, Hamburg, Germany.

To assess the efficacy of Bio‑Oil Skincare Oil in improving the appearance of striae.

Subjects: 38 female participants of varying ethnicities. Striae causes: various (post pregnancy, weight gain or adolescent growth spurt). Striae locations: abdomen, thigh and hips. Age of participants: 18 to 65.

Double-blind, randomised and placebo controlled. Subjects had matching striae or striae large enough to allow a half-half striae application and intrasubject comparison. Product was applied twice daily for 8 weeks, no additional massaging performed on the target area. Application performed under supervision at regular intervals. Assessments conducted at 0, 2, 4 and 8 weeks. Different scar parameters as defined in the Patient and Observer Scar Assessment Scale (POSAS) were evaluated.

Bio‑Oil Skincare Oil is efficacious in improving the appearance of striae. A statistically significant result after only 2 weeks (day 15), evident in 95% of the subjects. After 8 weeks (day 57) 100% of subjects showed an improvement, with the extent of the improvement more than double that at 2 weeks. A continuous improvement of POSAS over the duration of the study.