Venus Beauty Galleria is an undiscovered gem in Arcadia.
Their facial is one of the best experiences of my life. Plan on spending 2+ hours for a standard facial and walking out more relaxed than you have been in a month. Unlike some spas that turn on the steam and leave the room for 15 minutes at a time, a facial at Venus is 100% focused attention. Their standard facial includes 2 full hours of scrubbing, moisturizing, treating, massaging and eyebrow shaping. The technicians here (ask for Mary) are perfectionists and will not quit until you are scrubbed, polished, relaxed and happy.
Additional bonus - they are open until 8pm most days and open Sundays as well.