Can you guess the product?
It was a 1972 ad for Clairol's "Summer Blonde" hair coloring.
They also appeared on the box art.
BONUS: That same year, Nolte—looking more hardass—appeared in this h.i.s jeans ad.
OK, surveying all the evidence now available, I will say, definitely, that that woman is NOT Sigourney Weaver. Thank you, commenters.
Source: mobuki