Sea Buckthorn Oil has been studied for its potential benefits in supporting vaginal health, particularly for alleviating vaginal dryness and atrophy, which can occur during menopause or as a result of certain medical treatments. The oil is rich in omega-3, -6, -7, and -9 fatty acids, as well as antioxidants and vitamins, which are believed to contribute to mucous membrane integrity and hydration.

Several clinical studies provide some scientific basis for its use. For example, a randomized, double-blind, placebo-controlled trial published in Maturitas (Larmo et al., 2014) found that oral supplementation with sea buckthorn oil (3g daily for 3 months) improved vaginal mucosa integrity and alleviated symptoms of vaginal dryness in postmenopausal women. The study reported significant improvements in vaginal health indices compared to placebo. Additional smaller studies and animal research also suggest positive effects on mucosal tissue hydration and repair.

However, while these findings are promising, the total body of evidence remains limited, with relatively few large-scale or long-term studies. Most research has focused on oral supplementation rather than topical application, and the mechanism is thought to be related to improvement of mucosal health via fatty acid content. More research is needed to establish optimal dosing, long-term safety, and efficacy across broader populations.