For vaginal use, Yin-Care offers an easy-to-use washing applicator, which holds 100ml and has a built-in measuring system, with each section equaling 10% of the total volume. It makes it easy to explain the recommended dilution and is simple for the patient to use in the shower or sitting over the toilet.
Yin-Care products are imported and packaged as Yin-Care by ArborUSA. In China it is known as Jie Er Yin Xi Ye, literally “Clean Your Yin Wash-Liquid”. It is popular in China on a level rivaling America’s successful over-the-counter products. Millions of bottles are sold yearly, mostly for vaginitis and as a topical anti-fungal.
The Yin-Care formula is said to originate in an old Daoist formula from the area around Chengdu. It was used as a bath four times per year to prepare for seasonal changes while avoiding pathogenic factors. (Because Chengdu is hot and humid, topical fungal infections and other skin conditions may have been prevalent.) A spiritual devotee, Xue Yongxin, was authorized by his Daoist teacher, Zheng Guoli, to make the formula available to the people of Chengdu. Mr. Xue started manufacturing in 1982. By 1991, hospital studies began to confirm its efficacy as a topical application, and the government approved the product for hospital distribution. By 2004, 80-100 million bottles a year were being sold around China.
The modern manufacture of Yin-Care is state of the art. Fourteen herbs are used, each tested with high-density gas chromatography to ascertain their authenticity. The herbs are chopped and soaked in huge vats, then are heated for two hours to distill out essential oils. These oils are captured, bound in an emulsifier, and added in after the other herbs are cooked, condensed and filtered. Finally, a special proprietary hypoallergenic fragrance is added. The use of the essential oils is important, and the medicinal effects of the herbs could not be obtained by water extraction alone.