1.5 billion yuan. According to the query of China Research Network, the national rose pure dew industry reached 1.5 billion yuan by August 14th, 223. Rose pure dew, also known as rose water essential oil, refers to a 1% saturated distillation stock solution separated from rose when extracting essential oil. It is a by-product of essential oil with natural ingredients and light fragrance. Pure rose dew is dissolved in water, which has the functions of supplementing water and moisturizing.