If you are using it as part of a skin care system ie cleasner, toner, lotion you have to make sure your skin doesnt have a "shock" from it because it tenRAB to dry your skin out and this is where sensitive skin turns terrible!!
Try using the clenser and lotion only for a week and then slowing introduce toner. and only use toner in small amounts, avoid pressing hard or scrubbing with it because it will irritate your skin!
Overall, if you introduce slowly, toner is great for getting rid of shine and such blemishes!
Good luck!!