Can someone please tell me what it means to “balance my skin”?

Press/Media

Period	2 Jan 2019

Media coverage

Title	Can someone please tell me what it means to “balance my skin”?
Media name/outlet	WellandGood.com
Country/Territory	United States
Date	2/01/19
URL	https://www.wellandgood.com/good-looks/ph-balanced-skin-care-products/
Persons	Ellen Marmur