Pros

In general, the opportunities at L'Oreal are there for the taking, but (a) you need to have very thick skin along the way, and (b) ready to work the long hours.
There is a good amount of freedom to try new things for such a large company.
The internal training programme is robust.

Cons

Probably need to be French to make it higher.
Few women in top posts.
The style of management is very 'authoritarian' and control-oriented.
Goals and objectives are infrequently written and rarely clear-- making year end interviews a systematic surprise.
Work efficiency is hampered by bad time management and poor IT.

Advice to Senior Management

The diversity of senior management is a real issue. This needs to be considered for the long term health of the company.