Witch hazel is a plant native to the United States long used for skin care and first aid. The botanical name of plant is Hamamelis virginiana, however other plants from China are available on the market and identified as “witch hazel”. This plant is not a standardized US Pharmacopia, nor is the witch hazel made by A Wild Crops Farm.
The standard pharmacopia witch hazel is made from dormant twigs that have been masicated and soaked for 24 hours. For every 1,000 grams of witchhazel, 850 grams of water is added then steam distilled with 150 ML of alcohol added. There are no fresh, or living botanicals used to make standard USP witch hazel.http://www.pharmacopeia.cn/v29240/usp29nf24s0_m89070.html
There is a single distiller of commercial witch hazel in the United States. They make all the brands one finds commercially available and do a fine job at producing hundreds of thousands of gallons of witch hazel. There is a single small distiller of witch hazel hydrosol (NON- USP ) that produces witch hazel from fresh leaves and twigs using steam distillation.