The usual recommended time period to take dietary supplements for hair-loss is 3 months.
Hair grows at a rate of 1cm a month, which is why the results may not be visible after one month, however the best results are obtained after a three month period during which hair becomes stronger, hydrated and protected from the root through the new length of hair that started to grow when treatment began.
![Daños al cabello causados por el uso del casco](https://pilopeptan.es/wp-content/uploads/2014/09/shutterstock_61880995-300x200.jpg)
Can wearing a helmet damage my hair?
Using a motorbike helmet every day, for example, can cause damage to your hair especially if it is already weak and lifeless. The simple action