We have much experience with fixing Tefillin. But as you know the best medicine is preventive medicine. The following letter will explain how to take care of your Tefillin to prevent them from damage. We hope this will help fulfill the mitzvah of Tefillin in the most mehudar, best way.

Caring for your Tefillin.

1. Wetness: Do not don the Tefillin while your hair is wet, whether from a shower, sweat, gel, or the like. If the Tefillin were placed on wet hair, it must be wiped dry before being replaced in its box (be careful that you don't rub the corners of the Tefillin). If you sweat profusely, we recommend that you dry the Tefillin and allow it to air out at home. Exposure to wetness and moisture causes the ma'abarta, base to take on a distorted shape, leads to cracks, and causes the prudot, the Tefillin to open.
2. Moisture: You must not leave the Tefillin in a moist place, in order that they not become moldy or musty. In moist climates, the Tefillin should be aired out frequently.
3. Dents and bangs: While wearing and moving the Tefillin, you must be careful not to allow them to be banged. Dents can damage the Tefillin, and may sometimes even render them un-kosher, ritually unfit.
4. Heat: The Tefillin should not be exposed for extended periods to a source of heat or fire, nor should they be left in the sun. Tefillin should not be left in a car, even inside a container - as the container often absorbs heat from the sun.
5. Extreme changes of temperature: While travelling by plane, take the Tefillin in the cabin with you, and do not "check" them with your other luggage. The plane's cargo hold undergoes extreme changes of temperature, which can damage the Tefillin. Likwise being left in a care will damage the Tefillin.
6. Tefidanit: It is a water proof, shock proof carrier that was made for Tefillin. The merit of the Tefidanit has saved many pairs of Tefillin. You can see the Tefidanit at this link. Warning: Even with the Tefidanit one should not leave their Tefillin in a car.

• Pictures of damaged Tefillin
• Description of when Tefillin are un-kosher and need to be fixed
• Repairing your Tefillin