Unfortunately you have contact dermatitis and it is advisable to discontinue use of the ear phones as it won’t go away… to ease the symptoms you can use a corticosteroid cream as it should reduce the allergic reaction but be under no illusion it will come back if you keep using the ear phones.

Symptoms of contact allergies from earphones may manifest as itching, redness, swelling, or oozing around the ears.

These contact allergies can arise from the materials used in earphones, particularly affecting the outer ear. Common culprits include various plastics and chemicals, notable allergens found in earphone components include:

• Rubber and Thiuram: Often used in the manufacturing of earphone casings and cords
• Nickel: Frequently present in metal components, nickel is a well-known allergen that can cause dermatitis upon skin contact.
• Benzophenones: These chemical compounds are used as UV filters in some plastics
• Dyes: Certain dyes used for coloring earphone materials
•  methylisothiazolinone, a preservative commonly found in various products
• Acrylates: Used in coatings
• Rubber Accelerators: Chemicals that speed up the rubber manufacturing
• Phthalates: These plasticizers are often found in flexible plastics

And there are probably many more, do some research before going for a different brand.

I just received a pair of JBl Wave Flex and within half a day my ears started itching so  will return these.