The Brief: A beauty guru is a makeup and beauty expert.

DEEP DIVE
The term beauty guru usually refers to makeup beauty influencers and YouTubers. Examples of prominent beauty gurus and MUAs include Jeffree Star, James Charles, Patrick Starr, and Nikkie Tutorials.
Beauty gurus are notorious for the highly-publicized drama that they often participate in such as beauty blogger “dramageddon” or the James Charles vs. Tati Westbrook feud.