Have a shower
Take a shower initially. This will help to remove the superficial dirt, grim, etc. before you start the relaxing process.
Have a bath
When everything is set up, fill up the bath with water, adjusting the temperature to your comfort levels. Add essential oils and bath salts that you like and slip into the bath. Use a rolled-up towel to relax your head. Sit in the bath and soak in the soft music and the aromas of the room. Let your body relieve its tension gradually. Do not move much. Just unwind. You may also apply a soothing/organic hair or facial mask and let it work wonders while you relax.