Gentle touch provides safekeeping and, finally, happiness (6)
I believe the answer is:
caress
'gentle touch' is the definition.
(I've seen this in another clue)
'safekeeping and finally happiness' is the wordplay.
I cannot quite see how this works, but
'safekeeping' could be 'care' (I've seen this before) and 'care' is found within the answer.
This explanation may well be incorrect...
'provides' acts as a link.
Can you help me to learn more?
(Other definitions for caress that I've seen before include "Gentle stroke" , "Stroke lovingly" , "Embrace with affection" , "Tenderly stroke" , "Pat" .)