How do I clean my clear retainers?

Rinse with cool water morning and evening — avoid hot water, as heat can warp the plastic and ruin the fit. For a deeper clean, soak in retainer cleaning tablets for 15 to 20 minutes, or use an ultrasonic cleaner. You can gently brush with a soft toothbrush and a little mild soap or washing-up liquid if needed. Avoid toothpaste — it is abrasive, so it scratches the surface and can make the plastic more brittle over time.