Keys RediCare Insect Repellent & Therapy Spray

Originally developed to protect search and rescue dogs during the Hurricane Katrina recovery, Keys discovered that its unique blend of ingredients – neem, karanja, red thyme, peppermint, lemongrass, blood orange, and clary sage oils – actually helped people with chronic psoriasis and eczema. It also helped with burns and cuts, and even does extra duty as an effective repellent, making it a real powerhouse. Be warned, though: The scent is as robust as the mixture. [$19 for 4oz;]

Best for: Hiking, chronic skin issues, sunburns.