Old Americans needing some skincare (4)

I believe the answer is:

inca

I'm a little stuck... Click here to teach me more about this clue!

'old americans needing' is the definition.
I can't judge whether this definition defines the answer.

'some skincare' is the wordplay.
'some' says the answer is hidden in the clue (some parts of the word are used).
'INCA' can be found hidden inside 'skincare'.

Can you help me to learn more?

(Other definitions for inca that I've seen before include "Very old Peruvian (4)." , "lived in Peru" , "Native Peruvian" , "Tongue" , "Ancient Peruvian like Cain" .)

I've seen this clue in The Guardian.

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