having two type of content_type in case you have set one for all

it would be great if someone can help me with this issue.
i have set the header of all apis to "Content-Type": "application/json"
but now we need to have a different Content-Type for sending images with JSON content like 'Content-Type': 'multipart/form-data"
how can i define a new header that renders every time we declare it
and how can i do this by code?

const httpClient = axios.create({
headers: {
    "Content-Type": "application/json",
  }
})

in our apis

export const create = (data) => {
return httpClient({
    url: '/api/create',
    method: 'post',
    headers: {
        "X-CSRF-TOKEN"
    },

    data: data
  })
}