The alcohol found in toners can trigger rosacea or exacerbate sensitive skin. It can also trigger an overproduction of oil, which increases the risk of breakouts in acne-prone skin. For this reason, we suggest using alcohol-free toners that are formulated with the addition of skin-soothing, balancing ingredients — even if you’re targeting acne. Otherwise, you run the risk of developing skin that’s irritated, inflamed, and more vulnerable to environmental damage.