The market for specialty active ingredients–compounds that provide a demonstrable therapeutic effect on the skin or hair–and the systems used to deliver these ingredients, has exploded in the past few years. According to estimates by Kline & Company, Fairfield, NJ, the market for these materials and associated technologies is valued at more than $300 million at the manufacturers’ level and is still on the rise.To date, the key focus has been on formulated products that slo...