rajeunir

/ʁa.ʒœ.niʁ/
1.
verbInf2nd

to make (someone or something) look younger

to become younger (intransitive, literal or figurative)

Sa nouvelle coupe de cheveux la rajeunit de dix ans.

Her new haircut makes her look ten years younger.

2.
verbInf2nd

to refresh or modernize (an image, a brand, a neighbourhood, etc.)

Il faut rajeunir l'image de la marque pour toucher une clientèle plus jeune.

We need to modernize the brand's image to reach a younger clientele.