Essential oil characteristics and effects, but also the products of the very same tree can vary grossly. Lavender oil has long been used in the production of perfume. However, it can be estrogenic and antiandrogenic, causing problems for prepubescent boys and pregnant women, in particular. Lavender essential oil is also used as an insect repellent. Rose oil is produced from the petals of "Rosa damascena" and "Rosa centifolia". Steam-distilled rose oil is known as "rose otto", while the solvent extracted product is known as "rose absolute". The potential danger of an essential oil is sometimes relative to its level or grade of
Oil-paper umbrella as the umbrella surface is soaked in persimmon pigment. The persimmon pigment is made from fermenting the juice of green persimmons, which provides a suitable stickiness. The soaked flower petals are stuck to the umbrella scaffold one by one. Paintings or pictures are drawn on the peach flower petals prior to painting tung oil on top. The finalized umbrella is left to dry in a dry dark room. It requires at least 70 steps to produce a well-crafted oil-paper umbrella. In Luzhou, Sichuan, the oil-paper umbrella culture started around the end of Ming dynasty and beginning of Qing dynasty. Oil-paper