Rodan + FieldsLash Boost aims to help condition and strengthenlashes.

As part of the agreement, Rodan + Fields has offered to pay $38 million.

They also don’t need to provide proof of purchase.

three tubes of rodan  fields lash boost serums on black background

Allure/Courtesy of brand

The lash-growth treatment, Latisse, for example, contains a prostaglandin analog called bimatoprost.

The FDA has previously claimed lash growth products with isopropyl cloprostenate need to be classified as drugs and regulated.

In 2011, theFDA sent a warning letterto a company using the ingredient for lash and eyebrow products.

The letter noted that the products were essentially “unapproved new drugs.”