What should I do if I experience redness, burning, or irritation after applying this serum?

Stop using the product immediately if you experience burning, significant redness, or swelling. The eye area is the most sensitive skin on the face, and some people have reactions to specific actives in this formula — particularly Alpha Lipoic Acid, which can cause a warming or tingling sensation in sensitive users, and the Haloxyl bioflavonoid complex (Chrysin and N-Hydroxysuccinimide), which is a potent dark-circle treatment that some users find stimulating on reactive skin. Before using any new eye product, we recommend patch testing on the inner arm or a small area away from the eye for 24 hours. If you have known sensitivities to any of the listed ingredients, consult with a dermatologist before use. If the reaction is mild and resolves quickly, reducing application frequency to once every other day may allow your skin to build tolerance gradually.