Last month, it was reported that Selena Gomez was mulling a potential IPO or sale of Rare Beauty, her cosmetics business worth an estimated $2 billion.  Rare Beauty is not the only beauty brand in transaction talks, with Glossier, Merit Beauty and Kosas all reportedly exploring various IPO and sale options.  Coincidentally, perhaps, all four brands are also stocked in premium beauty retailer Sephora in the US. Last year, its first year in partnership with Sephora, Glossier was expected