COSRX - atimelesssoul review for AHA 7 Whitehead Power Liquid

this was my very first AHA concentrated product! i've been loving cosrx ever since 2015 (the starting point of my skincare journey) and i was really intrigued with this one since i had been wanting to incorporating chemical exfoliant in my routine. it's affordable and effective. it might not be the most gentle one out there but it didn't irritate my skin nor caused any purging. i used it once a week and built it up to two times a week after a month, paired together with the other half - their BHA liquid.