Pamper visage until plump, smooth and young-looking (4,4)

I believe the answer is:

baby face

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'until plump smooth and young-looking' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.

'pamper visage' is the wordplay.
'pamper' becomes 'baby' (synonyms).
'visage' becomes 'face' (I've seen this before).
'baby'+'face'='BABY-FACE'

Can you help me to learn more?

(Other definitions for baby face that I've seen before include "George Nelson" , "record?" , "One with the look of an innocent child?" .)

I've seen this clue in The Irish Times.

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