A sample study that has been carried out in China as well as abroad has shown that from the population at least 60% is infested with Demodex mites, some study’s even say up to 99%.
From those infested people 10% is developing skin diseases.

10.4% are getting acne like mite dermatitis
2.44% rosacea

(1) Professor Woodward Singerbush (institute of arthropod, South Georgia University, USA). Investigation of Demodiciodea epidemiology in the west of New York State of USA. (2) Professor Qu Kuizun (Qingdao Medical Colledge, Shangdong). Epidemiology of human demodicidosis. Chinese Dermatology Journal 1982, vol. 15(2) (3) Professor Qu kuizun. Relationship of human Demodiciode infection and rosacea:

Spot quantitative observation of the aspects of Demodiciodea epidemiology.
The Collection of the Chinese Demodicidosis Seminar. 1988.7.

There can be also other reasons for rosacea and acne but according Professor Zhao Zhong zhou 90% of the acnes are because of mite infestation.
(This data is obtained from around 150 little clinics in China whom using solely the Zhongzhou Medical Ointment for treating acne/rosacea and other related skin diseases with a success rate of almost 100%

The only way to be sure you have a problem with demodex mites is to carry out a test like described in the FAQ section, this can be done by a dermatologist ore yourself. You can also find the most commune symptoms from mite infestation in the FAQ

We provide for you on this page some pictures from typical examples of people with skin diseases caused by demodex mites.