Ingredient caution: niacinamide is usually gentle but might cause tingling or flushing in very reactive skin; alpha arbutin, kojic acid, licorice extract, tranexamic acid might cause tingling, dryness or redness in sensitive skin; UV filters might sting around the eyes or irritate very sensitive skin; preservatives such as phenoxyethanol/benzyl alcohol might sting very sensitive or compromised skin. Do a patch test before applying. Start slowly if your skin is sensitive and avoid combining too many new actives at once. First-time users should start 3–4 times a week and pair with sunscreen, because pigmentation care works best with UV protection. Patch test near the jawline first, avoid the eye corners, and remove gently at night. Do not apply on broken, freshly waxed or irritated skin. Stop use if irritation persists.