Pros
There are so many trainings every week that you end up accumulating a lot of knowledge over the years. The gratis is great; you get tons of freebies to try. Sephora is a great starting point in your Makeup Artist/Skincare Consultant career. You learn a lot on the job.
Cons
Depending on the location, the rest of your Sephora experience can either be good or bad. I've worked for wonderful managers who made my experience phenomenal and pushed me to advance; and then I've worked for lazy managers who lack experience in the field and who play favorites. Under these types of managers, your opportunity for advancement comes to a slow crawl. Also, the turnover in some of these stores is ridiculously high so you are constantly having to train new people only to say goodbye to them months later.