Not usual to get burnt by essential oils. Maybe your body is sensitive – the areas you have issues with are sensitive areas also. Hope you don’t have any further issues with them.

Maybe some kind of allergic reaction but it’s not usual. I use them all the time and they are recommended for people with sensitive skin as well

I don’t use essential oils. But you would think they are safe to use.

Ooh. Might be smart to see a doctor – but perhaps you used something too concentrated?

Yes you can get burns from essential oils.

The best home remedies for burns
Cool water. The first thing you should do when you get a minor burn is run cool (not cold) water over the burn area for about 20 minutes. …
Cool compresses. …
Antibiotic ointments. …
Aloe vera. …
Honey. …
Reducing sun exposure. …
Don’t pop your blisters. …
Take an OTC pain reliever.

My in laws gave me some expensive perfume once. I don’t usually wear it but as we were going to a wedding I decided to humour them. I sprayed a bit on my wrist which instantly turned red and began to burn. I washed it off quickly but my whole forearm ended up red and was still burning. I had to keep an ice pack on my arm for close to an hour before the burning stopped and redness began to go away. I have contact dermatitis and count that as an allergy to perfumes and certain products. I used to have to change all soaps and detergents every month or it would keep happening. Maybe go to the chemist and get a cream for it. I’ve used dermaid from the chemist. Also pawpaw ointment might work or aloe Vera

Never heard of this happening before. I would think you’re possibly sensitive to one of the ingredients

You shouldn’t get burns like that from essential oils especially since you dilute it in bath water.
You could be allergic to one of the oils in the blend.
From my personal experience with essential oils the quality of the oil is so important. I had tried so many different brands until I found one that was high quality but not too expensive. And didn’t set off my allergies.

I’ve never had this happen personally but I’m saying that I always mix my oils with coconut oil before applying to my skin or in my bath.