Hello Smile

FAQ and Answers

General questions

  • We believe that the use of our product should give you a feeling of satisfaction and pleasure as much as the result. The Hello Smile advanced pen contains a dual action system, which enables hygienic use, perfect dosage of the whitening serum during each individual use, as well as easy application of the serum to all visible areas of your smile.

    We use only natural ingredients to keep your teeth not only whiter, but also healthier. This helps protect the teeth, strengthen the enamel and reduce plaque.

  • Absolutely everything!

    From the product packaging, the design of the pen itself and the new improved formula. We have spent a lot of time, and put a lot of effort and knowledge to show you the perfect product that will meet all your expectations!

  • The Hello Smile pen will last even in case of the most demanding users 4-6 weeks when used on a daily basis.

  • A noticeable difference can be seen after 1-4 days, depending on how white your teeth are at the moment. The improved Hello Smile pen has been clinically proven to have such an effect on your teeth that it can make them up to eight shades whiter. Once whitened, your teeth will retain their whiteness as long as you maintain regular oral hygiene.


  • Our peroxide-free pen is very easy to use. It is activated by removing the lid and then twisting the pen base mechanism until gel comes into the brush. And, of course, brush your teeth before use. It is recommended to brush the teeth with a tissue to keep them completely dry. Then, apply a thin layer of gel to all your teeth and keep your lips apart for 1-2 minutes to prevent the gel from sliding off. If this method is inconvenient to you, try relaxing your lips and breathing through your teeth for a few minutes to help the gel dry faster. Do not eat or drink anything for 20 minutes, then simply rinse your mouth with water.

  • The product should be used once a day.

  • Don't worry, this is normal. Our formula contains agents that clean and strengthen your teeth, so when it comes into contact with bacteria, the gel will start to foam.p>

  • Don't worry, the swallowed gel will not cause any adverse effect on your health and body.

  • Of course it is. Our new improved formula contains exclusively harmless ingredients that will not damage your teeth or tooth enamel. It has been clinically tested and approved.


  • Ordering is done via our online shop or by phone. You will pay for your order on delivery (when the courier delivers the item to your address) in your own currency (in the currency of your country).

  • Shipping to Serbia, Montenegro, Croatia and Bosnia and Herzegovina is free of charge. You only pay the price indicated for the product, without any additional costs. Shipping WorldWide is additional charged 8 euros.


  • Serbia

    Guaranteed delivery time from the moment of an order is 24 hours if your order is made on working days before 4pm. If you make an order on a working day after 4pm, the delivery time is 48 hours. All orders received on Saturday and Sunday are dispatched on Monday and they will be delivered on Tuesday. A courier will call you before delivering the item to your home address.

    Croatia, Bosnia and Herzegovina and Montenegro

    The guaranteed delivery time is 1-3 working days. You will be informed of the delivery of your item.



Bulevar Mihaila Pupina 10ž/353
11000 Belgrade
Republic of Serbia