In what order should I apply this eye serum in my morning and evening routine?

Use the serum on clean, dry skin after cleansing and any toner or essence, but before heavier creams, oils, or sunscreen. Dispense a small amount — roughly half a pump or a rice-grain size per eye — onto your fingertip and gently pat it along the orbital bone, staying on the bone rather than dragging into the lash line. Wait 30–60 seconds until the serum feels fully absorbed and the skin no longer feels tacky; this prevents pilling when you follow with moisturizer or SPF in the morning. In the evening, the same sequence applies: cleanse, optional toner, eye serum, then night cream or oil. Because the formula contains vitamin C, morning use adds antioxidant protection against pollution and UV-induced oxidative stress, while evening use supports overnight hydration. If you also use a prescription eye treatment (for example, a retinoid), apply the prescription first on clean skin, let it absorb, then follow with this serum for hydration and barrier support. Avoid direct contact with the eye itself; if product migrates into the eye, rinse with water.