(2) AVEDA Thickening Tonic Styling Spray, 3.4 oz ~ NEW. DETAILS: Make your hair look thicker and fuller with this styling spray, which instantly thickens from roots to ends. 96% naturally derived* thickening tonic actually expands every strand of your hair for a fuller look. Perfect for thin or thinning hair - or anyone who wants a boost. KEY INGREDIENTS: A botanical blend of certified organic amla, wheat and corn helps thicken and hold your fuller hair style. . . . . . .