Murad's cream with chaparral to inhibit hair growth?

In the November 2002 issue of Self magazine, they describe a Murad’s product that contains chaparral and saw palmetto as a “hair growth inhibiting plant extract”, belonging to the specific product line Resurgence.
I understand about the saw palmetto thing, as saw palmetto has an anti-androgenic effect… but that is, when taken orally and in certain doses. I wonder if a cream can topically do that.
I don’t know about chaparral…
I found the link to a site that sells it with more info.
Anyone knows if this claim is true?