Hidden Oasis SpaSalon in Fairfax Station offers a wide variety of services to men, women and children, ranging from hair care to massages. The spa is well-kept and has a soothing décor. Walk-ins are encouraged but a credit card is necessary for other appointments and will be charged if a cancellation is made less than 24 hours before a scheduled visit. The spa also has a referral program: each first-time customer who is referred to Hidden Oasis receives $5 off their next service.