I am waiting for my showet filter; Can I use bottled waterr bought in store to rinse my hairsystem meanwhile?

Yes you can.

For newbies that are not familiar with what we're discussing, a charcoal shower filter removes the chemicals from you water and leaves your hair, and skin, feeling cleaner and softer. It screws on to your shower and then the shower nozzle screws into the charcoal filter. You can get them at Home Depot and Lowe's for about $40---well worth it.
Regards,
John
http://toplace.com/