The most common and most likely answer to this crossword clue is the 4 plus 4 letter word ALOE VERA
I've seen this crossword clue in The Times
A
L
O
E
V
E
R
A
More clues leading to the result ALOE VERA
- To gain energy, a partner taking a soothing juice
- Touring east a devotee acquires a 23?
- Destroy or leave a plant?
- Adult partner takes Ecstasy with just a little apple juice
- Sweetheart seen in a lover’s embrace alongside a plant
- Was St-Malo ever acknowledged as source of medicinal plant?
- A reduction of weight, drinking always juice
- Drug kept by a boyfriend, say, with a cosmetic preparation
- Leave oar tangled in plant
- Succulent, dark bit of breast turned and even cut in half, in the middle
Buddy explains!

The straight part
We know that "soothing juice" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case soothing juice = aloe vera.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.