Make no Ohime-sama

Karen, a cool girl who everyone at school calls "Prince." But secretly, she's also working as a makeup artist under the name Sapphire, helping people through the power of makeup!Lipstick, mascara, blush, eyeshadow... With the magic of makeup, transform into the "me" you’ve always wanted to be★ A story of beauty and transformation!

(Source: Shogakukan, translated)