Leave your tan on for at least 7 hrs and if possible best to leave on overnight before showering or taking a bath - this allows your tan to develop.
Avoid wearing socks or shoes after tanning as sweating can inhibit the development of your tan and can leave those unattractive white sock marks/lines!
Avoid applying moisturisors or deodorants after you have tanned
Avoid wearing tight clothing for at least 5 hrs
Swimming, showering, and excercise should be avoided for at least 5 hrs after tanning as this can inhibit the development of the tan
Dont shave until 12 hrs after tanning
To maintain your tan you should moisturise regularly (with an oil-free moisturiser)
Avoid long hot baths and showers as they speed up exfoliation
Pat your skin dry after a bath or shower, rubbing your skin may rub off your tan
avoid swimming pools or sea water as these can reduce your tan