Our dental care pens contain lavender oil, menthol, papain. It can directly remove tooth stains and has a significant whitening effect. Does not damage the teeth, suitable for long-term use. Its use method is very simple: 1. Turn the brush head downward and unscrew it to let the brush head absorb the liquid. 2. Apply it to your teeth and wait 20 seconds until it dries. Contains lavender oil, which helps soothe the mouth. Unique nib design, precise application of whitening ingredients.