Shelley was the packaging/box model for Clairol Nice 'n Easy from 1965 to the late '60s. Nice 'n Easy was a shampoo-in permanent hair-coloring product for women for use at home. The 1968 commercial for the product is on YouTube. It featured Shelley (on the box) at the end.
Shelley was on the Clairol Nice 'n Easy packaging/box.
She also appeared on the bottom portion of all the print ads.