(わかがえ)

わかがえり
noun
rejuvenation; becoming younger
1. rejuvenation; looking or feeling younger; renewal
The process of becoming or looking younger, or of being refreshed and renewed. Used for both physical appearance and for organizations or systems being revitalized.
若返(わかがえ)りの秘訣(ひけつ)(おし)えてください。
Please tell me the secret to rejuvenation.
この化粧品(けしょうひん)(はだ)若返(わかがえ)りに効果(こうか)がある。
This cosmetic product is effective for skin rejuvenation.
(あたら)しいメンバーが(くわ)わり、チームの若返(わかがえ)りが(すす)んでいる。
With the addition of new members, the team is undergoing rejuvenation.

Derived from the verb 若返(わかがえ)る (to become younger, to be rejuvenated). Used in beauty and health contexts: 若返(わかがえ)りの効果(こうか) (rejuvenating effect), アンチエイジング / 若返(わかがえ)治療(ちりょう) (anti-aging treatment). Also used metaphorically for organizations: 組織(そしき)若返(わかがえ)り (organizational rejuvenation, bringing in younger members), 世代交代(せだいこうたい)若返(わかがえ)り (generational change and renewal).