Toner's have stood the test of time in the skincare game. But what are they really doing for us? And is every toner created equal? Let's find out.

Damyan Nikolov is a host, entrepreneur and a skincare formulator. He is the founder of Open Formula - clinical skincare for every budget. Check it out at https://www.openformula.com

Ask him anything at [email protected] or on Instagram @damyannikolov