Lime juice has a variety of uses, including culinary, cleaning, dyeing, skin care and even medicinal. It is used to treat scurvy and scrub away dead skin, it helps with constipation, functions as an inhaler and is very useful if you are marinating a chicken breast. While there are few risks and many benefits involved with using lime juice, you still need to be careful because lime juice can be harmful in some instances.
Lime juice contains sulfites, a common preservative, which can produce an allergic reaction in some people. If you are allergic to sulfites, exposure to lime juice can cause you to break out into hives or possibly other dermatological inflammations, like eczema. If you work in a kitchen and frequently handle lime juice as part of your job, you might also experience an outbreak of hives or eczema on your hands. In rare instances, asthmatics can suffer an adverse effect from lime juice, causing their symptoms to flair up.
If ingested, the seeds from a citrus fruit, which includes limes, can be poisonous. Whether you are using lime juice for food prep, as a beauty aid or for medicinal purposes, do not eat the seeds from the lime itself. Even in small quantities, they are not safe.
Lime juice is highly acidic and can damage your eyes if any amount gets in them. When handling lime juice, exercise caution to prevent it from getting in your eyes. If you do get lime juice in your eyes, wash them immediately with cold water. If you continue to experience discomfort, see a doctor immediately.
References and ResourcesTexas Medical Center: Lime Juice and Sunshine May Irritate Skin
FoodReference.com: Key Limes
University of Florida: IFAS Extension: South Florida Tropicals--Lime