Big brand talks: In conversation with Unilever, REN, Beiersdorf, Bulldog and Beauty Kitchen Loop power: Big beauty brands see ‘great opportunity’ in reusables 29-Jul-2020 By Kacey Culliney Unilever, REN, Beiersdorf, Bulldog Skincare and Beauty Kitchen are all dedicated to continued innovation around durable beauty with TerraCycle’s spin-off Loop, but each brand says there remain challenges ahead.