Hallstar, a specialty chemistry company based in Chicago, acquired bioactive ingredient supplier Oléos. Located in Montpellier, France, Oléos’s proprietary oleo eco-extraction technology produces natural, sustainable and clinically proven bioactive compounds for cosmetic applications including anti-aging qualities, dark spot diminishment and skin whitening.   Oléos’s bioactives line promises to help Hallstar meet growing consumer demand for high-efficacy, all-natural products, said the company...