Textile treatment Purista has secured acceptance from the US Environmental Protection Agency, opening the door to further growth in the US clothing and home textiles sectors.

Peter Cowey, international business manager of Arch Chemicals Inc, which produces Purista, said: "The Purista treatment is very cost-efficient and offers consumers and textile suppliers real and useful performance advantages."

Cowey said the company continued to establish the brand in the UK and Europe while the EPA registration process was underway, working with retailers such as Wal-Mart's George, Next, Moss Bros and Tesco.

Purista treatments, which are based on polyhexamethylenebiguanide hydrochloride, are designed to protect clothing and other textiles from odour-causing bacteria, providing a long-lasting 'fresh finish'.

Since its launch in the UK, Purista has been chosen for 30 retailers to be used on items such as socks, suit linings, towels and linen.

Arch Chemicals Inc is a global specialty chemicals company with approximately $1.3 billion in annual sales.