I looked up the definition on Wikipedia:
http://en.wikipedia.org/wiki/Witch_hazel_(astringent)
Now that I get the general idea of the goal, does anyone have any specific recommendations?
I went to Sephora this afternoon hoping to pick up the Matte for Men product, but even though the Matte for Men website lists them as a retailer, the Sephora location I went to had no idea what I was asking for. She said it was her understanding that Matte is an ingredient in a lot of products, but she had never heard of it as a stand alone brand name. I pointed her to the website.
The clerk did refer me to some products that she said alot of men use for after shaving rituals, but the French names on some of them kind of turned me off.
I guess I can comparison shop by looking for some of these main ingredients: include gallic acid, catechins, proanthocyanins, flavonoids (kaempferol, quercetin), essential oil (carvacrol, eugenol, hexenol), choline, saponins, and bitters.
I'd be interested in suggestions for specific astringent products that I could purchase locally without having to order them online.