Crossword Genius

All done with odd lotion ingredient (4)

Ross

I believe the answer is:

aloe

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

'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" .)

I've seen this clue in The Mirror.
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