Possible Clues:

• Relaxing soak
• Unwinding luxury
• Foamy tubful for unwinding
• You could aptly sip Champagne while soaking in it
• Relaxing soapy additive to water
• Lather source
• Good clean fun?
• 'U B4 LA'? The decryption gives 'soak'
• Dome on University's left agent foaming
• Modesty preserver, in some films