Verified answer

若返ったでしょ？？w？

わかがえったでしょ？

Wakagaettadesho?

The lowercase 'w' at the end of the sentence is the Japanese equivalent of the English 'lol'. It states that the person is laughing. This is because the word for laugh in Japanese is 'warau' which starts with a w when in Roman alphabet.

若返ったでしょ? means something along the line of:

I look younger right?

I've become younger, right?

Use google translate

I'm looking young again? Haha?

若返った means "been rejuvenated" or "got one's youth back". "W" means "lol". So "I look young again, right? Lol!"