NEW YORK — You could call Kevin Mancuso the hair apparent.

Kiehl’s Since 1851 has signed the noted editorial hairstylist to a consultancy gig, helping to create and refine the brand’s new Stylist Series of hair products.

The new line, expected to hit stores in late June, will comprise nine technologically advanced styling products. Pricing, which has not yet been finalized, will be in the $10-to-$20 range.

And the development process is already on its way with some unusual test subjects: Hollywood A-listers such as Renée Zellweger, Naomi Watts, Britney Spears and Evan Rachel Wood. Mancuso, who helped staff the brand’s celebrity suite at the Sundance Film Festival and who is also prepping for Oscar night, sought feedback from stars on several of the products while in Utah. The results? Favorable. “Everyone’s loved them — and I basically saw all hair textures at Sundance,” said Mancuso, taking a break from a shoot Thursday.

Mancuso said that he’s been a longtime fan of the brand’s cult favorite Silk Groom, which he uses in multiple ways — to emphasize curls, slick back short hair and create tousled looks. “The quality’s amazing on all of their products,” he said, adding that he’s worked with the brand “informally” over the past 10 years. “It’s been amazing to work on this line. It’s going to do well because it’s not just a set of products that everyone has — the formulations are unique. Take the straightening gel. These types of products can be hard to use, but the Kiehl’s version is more of a cream, and it’s not too light or too heavy.”

Other favorites include the wax and hair gel in the line: “The wax doesn’t have the heavy, greasy texture that a lot of other waxes do,” he said. “It can even be used on fine hair without weighing it down too much. And the hair gel’s texture is so good that after you put it in your hair, you can run your hands through it without getting a handful of goo.”

This story first appeared in the February 4, 2005 issue of WWD. Subscribe Today.