We use Bronze Biologic Tanning system- All Natural Cosmeceutical Spray on Tanning. Bronze Biologic’s premiere cosmeceutical tanning solution are proprietary formulas that use only the finest ingredients available to produce a safe, all natural looking tan. Our tanning solution does NOT contain any toxic chemicals, additives, dyes, perfumes, alcohol, artificial colors or harmful ingredients. Because of the quality, purity and freshness of our Bronze Biologic ingredients, our tanning solution will give you a beautiful, golden bronze tan that will last several days depending upon skin type and condition.