Apply colour that’s fashionable time after time (4)
I believe the answer is:
tint
'apply colour' is the definition.
I can't tell whether this definition defines the answer.
'fashionable time after time' is the wordplay.
'fashionable' becomes 'in' (in can mean fashionable or trendy).
'time' becomes 't' (abbreviation).
'after' means one lot of letters go next to another.
'time' becomes 't' (abbreviation).
'in'+'t'='int'
'int' after 't' is 'TINT'.
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for tint that I've seen before include "Hue, shade" , "Shade; colour slightly" , "A slight shade of colour" , "'Shade, tone (4)'" , "A slighth shade of colour" .)