I think the lemon spray is used for all sorts. I remember having a pedicure and they used it on my feet, then had a manicure and they used it on my hands.
I also came out in some sort of itchy red rash and tried all sorts of creams and potions. Tried the good old lemon cologne and 2 days later - it disappeared. I brought some back as well.
Hubby gets bitten a lot by the midges etc while he mows the lawn. Make him splash the lemon spray on and he is in heaven while the insects are definitely in hell!