Like a number of other users, I have a combination skin: oily t-zone with enlarged pores. I have used many lines (Bliss, Ling, Valmont, Shu Uemera, Eve Lom, Dermalogica..), none of which had any effect on my relatively large pores. I have started using the Jan Marini line about three weeks ago (Glycolic wash, c-esta, bioclear and age intervention) and my skin has already been transformed. My pores have shrunk and I have a glow, which even my dermatologist has noticed. This is the best line I have tried so far. I am really impressed.