The minister said the important thing was that MBIE was under budget overall.
"I don't actually class this particular item as one we should be spending time on," he said.
Mr Joyce rejected suggestions that there was a culture of extravagance at the ministry, though he reiterated that he was disappointed in some of MBIE's more expensive purchases.
Labour's economic development spokesman David Clark said he was "intrigued" that Mr Joyce appeared to be defending the spending.
"I look forward to the next one, which will presumably will be hair curlers or who knows what?" he said.
Dr Clark said it was reasonable to provide changing rooms and showers for public servants, but no taxpayer would agree with providing hair straighteners.
Mr Joyce and Dr Clark, neither of whom have a full head of hair, agreed on one point - that they were not well-placed to be commenting on matters related to long hair.