Polyhexamethylene Biguanide (Preservative used in Soothe emollient eye drops)
IN BRIEF
PHMB is an ophthalmic preservative used in several contact lens solutions such as AMO's multi-purpose solutions.
DISCUSSION
WHAT THE MANUFACTURER SAYS
"Commonly considered one of the gentlest preservatives, Polyhexamethylene biguanide has been used safely for many years in contact lens care products. All eye drops in multi-use packaging have preservatives to keep the product safe for everyday use."
