Mr Allen said the detailed process consisted of an initial application, followed by sending through physical product samples.
Neither company won their category, but Ubco won an award for Product Design: Automotive and Transport, while Inverse was named for Product Design: Sport and Lifestyle.
"As with all the really big international awards, they are effectively adjudicating the quality of the work," said Mr Allen. "All award winners are able to use the design mark."
Daryl French, Roholm's acting chief executive, said the award backed up his recent experience in Europe about the potential of Inverse, which uses sub-zero temperature to induce a natural conditioning effect.
"It reinforced the fact we've really got a game-changing product in the hairdressing industry on a global basis," he said.
Both Ubco and Roholm are moving beyond the start-up stage into full-scale production.