Hi Stains may be due to improper oral hygiene, having habits of tea,coffee ,smoking,pan... You need to reduce the following habits to reduce the amount of stains in your teeth and you have to brush twice regularly by professional brushing technique as thought by dentist and flossing the teeth regularly and should use mouth wash twice daily( morning and night after food) for better oral hygiene  maintanence

Incorrect oral hygiene habits ( especially not flossing), excessive consumption of tea, coffee or red wine, Habits like smoking etc are common reasons why the stains appear in a short span. Like my colleague already mentioned GC mousse will not help in this regard.

Thanks for inquiring. Reasons for stains developing again can only be addressed on clinical examination. Regarding GC Tooth Mousse plus, it is recommended for patients with high caries risk, as it contains bioavailable calcium and phosphate with fluoride.

Dear Sir, Incase of high coffee / tea intake , smoking, improper oral hygiene, Pan can stain your teeth at a much faster rate. 1) Try Reducing the Habit that maybe causing your teeth to stain 2) Brush twice a day 3) Floss Daily 4) Clean your tongue Daily 5) use a mouth wash 6) Get your cleaning done everything 6-8 Months