1. Prefer natural-looking cosmetics

Reason: Reduces rumours in the media
Exemption: It’s merely a “preference.”
The Royal Family does not enjoy huge, smokey eyes or the opportunity to tint their hair crimson or any other color. Kate Middleton and other royal ladies don’t seem to be taking many chances with their appearances.

Preferably, Natural-Looking Makeup ©Getty Images/Samir Hussein
This is due to the preference for natural hair and makeup. When making official public appearances, the palace requests that royal women keep things as simple as possible to avoid diverting the attention of the media or starting rumors.