I have extremely acne-prone skin, so I was really excited to give this toner a try. It is suggested that you use this product twice daily, but I found that using it so often really dried out my skin, even when I used the accompanying moisturizer. I started using it once a day, and after I got my acne under control, went to only using it when I had a breakout. This toner did do a good job controlling my acne and dries up pimples quickly. It does burn slightly when applied, but this is common with any toner. One bottle lasts me several months because I use it infrequently. If you were to use it twice daily, it would last about a month. To use this toner, simply squirt a little bit on a cotton ball, the rub on your face. After using the toner, apply a light moisturizer to keep your skin from drying out. Overall, I would reccomend this product to someone with an acne problem, but for the average person with average or normal skin, I would try something else.