I had read about this place on happycow, and here's my Ema's Herbs review.
Came in during the daytime when the owner was already assisting with other people. We browsed around to see what was being offered. A young woman told us that Ema is trained and can diagnose people by doing reflexology on the feet, after which you would be required to buy 2 pouches/bag of herbal teas as part of your session and treatment. Each bag of herbal tea (several servings) costs $20+.
This is primarily a herbal tea formula shop, housed in 2-story house on the corner of Main and Fir St, in a walking & shopping part of downtown Ventura. Upstairs is a hair salon.