Avon is doubling up with a new luxury skin care SKU. The Avon Anew Ultimate Supreme Dual Elixir ($50) features two innovative formulas—a unique serum and a blend of precious oils—combine for one supreme elixir that’s three times more powerful than a serum alone, according to the company.   The serum and oil are separated to preserve their potency and even more powerful when they meet. Formulated with ingredients like rare Tahitian black pearl extract and camellia oil, blend the two together to...