rejuvenation

US /rɪˌdʒuː.vənˈeɪ.ʃən/
UK /rɪˌdʒuː.vənˈeɪ.ʃən/
1.

the act or process of making someone look or feel young and energetic again:

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Anyone can benefit from facial rejuvenation treatments.
:
rejuvenate