In the United States, Kao United States Inc. voluntarily recalled some lots of Oribe Serene Scalp Densifying Shampoo because of possible bacterial contamination. The recall reaches consumers, retailers, and distributors in the United States and Canada.

The decision prioritizes removing potentially affected products from circulation, while the scope of the recall leaves open whether consumers need stronger protection or additional evidence before the response is considered sufficient. The drug administration's notice documents the voluntary recall.