Troxerutin

Troxerutin is a flavonoid (rutoside derivative) used topically for antioxidant/vasoprotective and anti-redness support, typically at low percentages in leave-on products. Available clinical and patch-test experience suggests it is generally well tolerated with low primary irritation, though any bioactive botanical-derived compound can rarely sting or trigger dermatitis in highly reactive eczema patients. Given its low but non-zero reactivity potential in compromised skin, it fits a very gentle score rather than inert. Safety Notes: In commercial OTC skincare, troxerutin is most often used as a microcirculation/anti-redness flavonoid in leave-on eye and face serums/creams, where it commonly appears at low supportive levels around 0.05–0.3% alongside other soothing actives. More targeted consumer-available “vascular/under-eye dark circle” treatments and sensitive-skin redness serums have been marketed at 1–3%, with a small number of high-strength OTC formulations reaching ~5% as a hero active. It is rarely used in rinse-off products; the observed market range is largely driven by leave-on stability/solubility constraints and positioning as a primary vs supporting active.