Sienna X The Sienna X Clear Tan is unlike any other solution. This innovative new spray tan sprays on clear, so clients leave without an instant colour and there is zero transfer onto clothes or other fabrics. Instead your clients will see their tan develop gradually over the next eight hours. Developed with Bridal clients in mind who want to eliminate the risk of guide colour transfer or for last minute clients who want to continue with their day without wearing guide colour. Recommended for experienced therapists.