03 Dec 2020 --- Probiotic skincare company Mother Dirt is reformulating its entire product line to include the company’s active probiotic system. The system includes patented ammonia-oxidizing bacteria (AOB), which boasts restorative skin health properties. AOB is the key ingredient in Mother Dirt's flagship product, AO+ Restorative Mist, which has garnered a fan following throughout the years, according to the company.