Rutinyl Succinate

Rutinyl succinate is a modified derivative of rutin, a naturally occurring flavonoid found in plants such as buckwheat and citrus. The succinate ester modification improves the ingredient's stability and penetration into skin compared to rutin alone, making it more practical for use in cosmetic formulations.In skincare, rutinyl succinate functions primarily as an antioxidant and UV absorber, helping to neutralise free radicals generated by environmental stressors and reducing UV-induced damage to the skin barrier.

As an antioxidant, rutinyl succinate works by donating electrons to neutralise unstable free radical molecules. This prevents these reactive compounds from damaging skin cells, proteins and lipids. The ingredient's capacity to absorb UV radiation provides an additional protective mechanism, particularly in the UVA and UVB ranges.The succinate ester structure makes this form of rutin more lipophilic (fat-soluble) than standard rutin, which may improve its ability to penetrate the outer layers of skin and remain stable within formulations over time.

Rutinyl succinate is typically found in serums, moisturisers and sunscreen formulations. It works well as part of a layered skincare routine and should be used alongside a broad-spectrum SPF 30 or higher for adequate sun protection. Apply to clean skin before heavier creams, or mix into your existing moisturiser if preferred.

Generally well-tolerated across skin types with minimal reported irritation. Those with known sensitivity to bioflavonoids should patch-test first.