Pros
Good salary, products for free Leadership and responsabilites on projects Overall, you learn a lot and companies will value you when you will look for a job if you have L'Oréal on your resume.
Cons
People at L'Oréal need to fit a certain mold :show-off, tell the boss he is great even if you think the opposite, laugh to jokes that are not funny and use the same expressions as everyone just like sheep, try to look just like every other employee in the company. If you do not fit that mold and if you express critical thinking towards that mold, beware : you will be pointed out as... weird. You are told during your internship that if you have an excellent evaluation in the end, you will get hired. That is a big fat lie to squeeze the juice out of you at a low price (interns are paid much less than employees of course). The people who get hired at L'Oréal are not the best but the ones who perfectly fit the mold described in the 1st paragraph. And they say they are all about diversity... Instead of hiring, L'Oréal relies on (cheap) interns. They are asked to take important responsabilities and commit fully to their job, but are not informed of major decisions (that they need to know to do their job correctly).