In June 2009, Kim, Kourtney and Khloé Kardashian promoted a tooth-whitening pen sold under the Idol White name. Period coverage described the product as another addition to the sisters’ expanding list of television, retail and endorsement projects.
The old page was not an independent product review: it contained a promotional link framed as a free trial. That destination is no longer trustworthy and has been removed. No claims about effectiveness, safety or a free offer are repeated here because the surviving sources do not establish them.
The historically supportable point is narrower. The sisters were publicly associated with Idol White in 2009, and contemporary celebrity coverage specifically referred to them endorsing a whitening pen. Readers evaluating any current dental product should rely on present-day professional advice rather than an expired celebrity promotion.