the confusion with regard to the use of a Vs.astringent toner What is an astringent and what is it for? What a used toner cartridge and when to use?Is there any difference between the two? There are a lot of questions, the answer is very simple. Discover striking differences between astringent and tones that will help you understand the purpose of each product, and when to use each. Difference between and Astringent Toner Both astringent and toner products are important for the regular care of.