South Africa, Jan. 8 -- For decades, sunscreen advertising has shaped beauty ideals, dictated how women's bodies should look and reinforced social norms.

Our recent study analyses historical and contemporary advertising campaigns and shows how these messages have endured, continuing to influence ideas about gender, health and personal responsibility. These messages are not only about safety or wellbeing, but about staying youthful, attractive and socially acceptable.

The early 20th century saw an increase in recreational sun exposure. Entrepreneurs quickly seized the opportunity, producing creams and oils that promised a golden tan without the burn. From the start, these products were tied to female beauty and sexual appeal.

Early ads ...