St. Moriz Professional Dark Self-Tanning Lotion 8.45 fl OZ. If you are looking to achieve a deep, bronzed tan with a professional finish, the St. Moriz self-tanning lotion dark is perfect for you. Lotion formulation is easy to apply and leaves you with a natural looking, dark tan. The formulation is quick drying and extra moisturizing, making it great for dry skin.