LOREAL INOA OXYDANT 20 VOL 1000ML . INOA rich Developer 20-Volume is totally stable and buffered to ensure consistent and uniform color results. It’s creamy, made formulas supply mild, controlled lightening and coloring action. INOA rich Developer comes in 10, 20-and 30-vol. INOA, our first ammonia-free permanent technology, revolutionized the hair color trade with a breakthrough ODS² Oil Delivery System.