Side Effects of Kojic Acid on the Face

Kojic acid is used in products intended to reduce the appearance of excess pigment. If the skin barrier becomes irritated, burning, tightness, flaking, or redness can follow. An allergic contact reaction may produce itching, swelling, or a rash, sometimes after repeated exposure. Inflammation itself can leave darker or lighter areas, particularly when the skin is exposed to sunlight while recovering.

Stop the suspected product and simplify your routine to gentle cleansing, bland moisturising, and daytime sun protection. Avoid scrubs, peels, fragrance, and other strong brightening products until the skin settles. Do not apply the product to broken skin or increase its frequency to chase faster results. A clinician can distinguish irritation from allergy and recommend a suitable treatment if the reaction persists.

Arrange prompt assessment for facial swelling, blistering, marked pain, spreading rash, oozing, or symptoms that do not improve after stopping the product. Get emergency help for difficulty breathing, throat tightness, or swelling of the lips, tongue, or eyelids.

Take the product packaging and ask whether the reaction looks like irritation, allergy, or inflammation-related pigment change. Ask what ingredients to avoid, when to resume active products, and whether a supervised skin-brightening plan is suitable.