Answer
Stop using it and ask a pharmacist or clinician if irritation is severe, persistent or associated with swelling, blistering or a spreading rash.
Sources for this answer
- Boots Dual Action Athlete's Foot Spray — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.