All done with odd lotion ingredient (4)
I believe the answer is:
aloe
'lotion ingredient' is the definition.
(I've seen this in another clue)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for aloe that I've seen before include "O, ale with bitter plant" , "Succulent plant (4) 5532" , "Plant source of purgative drug" , "shrub" , "Flower, maybe vera" .)