The more women on screen the less the hair quality...

In PEPLUM films, when there were many women per square inch on screen, the more the wig selection suffered. Women's hair/wigs/extensions were/are costly and because there were often big scenes with throngs of beautiful women in many of these films, the quality of wigs suffered exponentially. Here are a few examples. Some films didn't suffer from this affliction. Case in point: SAPPHO THE VENUS OF LESBOS.

JULIUS CAESAR AGAINST THE PIRATES

THE RAPE OF THE SABINE WOMEN

ROMULUS & THE SABINES