Just take off the backing off of the double sided tape, add the silicone (supplied) and place the unit where you want the dispenser to stay. Push hard against the dispenser to ensure that all is touching your flat wall. Then wait 24 hours for the silicone to dry (do not add lotions/liquids until you have waited 24 hours for the silicone to dry). If you can't wait 24 hours before taking a shower (therefor creating possible water getting behind the shower dispenser) then put some duct tape or something above the dispenser temporarily for a few days to prevent water from touching the silicone. Just be sure to allow enough time to let the silicone dry completely.

That's it!

You're done.

No tools.

No drilling.

No wall damage (you can also install using screws if you wish).

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Easy to Fill.

Easy to Use!

Quality and Reliability.