For me it's always been hard to criticize different products I try. When I find products that don't work for me, I usually put them aside and never talk about them rather than saying something bad about them. But, it is time I started talking about the items that I don't like as well. I was inspired by Mateja's post about the products that didn't work out for her, so I went through my stash and picked out everything that did not impress me.
