"This is due to the cap tightness of fit in the jars."
The recall was a precautionary measure, and there had been no complaints of babies choking, the company said.
A Weleda spokesperson said the recall had required it to redirect the majority of internal resources to support the recall process.
"We are a small company so it has had a big impact on staff, especially those who worked tirelessly throughout Easter to assist with consumer and retailer queries.
"Whilst it is too early to ascertain financial effect, fortunately we have many consumers who love Weleda and we hope they will continue to do so."
The affected products would have been distributed across New Zealand with the company identifying the fault during quality control testing on April 3, and issued an Urgent Medicine Recall on April 18.
Anybody who had purchased potentially affected products between October 2018 and April 2019 should stop using them, and return them to Weleda NZ or the retailer they were purchased from, for a refund.