What is the #1 hair care company?

The #1 hair care company according to the search results is Monat Global, which has been named the World's #1 Direct Seller of Premium Haircare by Euromonitor International Ltd. However, in terms of broader popularity and social media engagement, Cosmetify's ranking lists Olaplex as the #1 haircare brand in the world. Both Monat and Olaplex have distinct recognition in the industry, with Monat excelling in direct sales and Olaplex in popularity metrics.