It is safe to use toner every day as long as you are using a gentle, alcohol-free formula. For best results, it's recommended that you use a toner every day - and if you can, twice a day. The first application should be after cleansing your face in the morning, and the second at night after you've removed all your makeup. Of course, how often you use toner and at what times of day will depend on your skin type and any concerns you might have. Keep an eye out for toners with ingredients that match your needs!