[header] How to use teeth whitening strips [title] Read the instructions carefully. [step] Although most whitening strips are applied and used in a similar manner, some brands may have different instructions. Always read the instructions fully and be aware of any side effects before using any whitening strip or whitening product. 
[substeps] Misuse can cause damage to your teeth, gums, and health. Instructions can vary between brands, always fully read the instructions before use.