Peppermint is sometimes promoted as a skin product to stop itching in dogs.
Peppermint is extremely acidic and is irritating to inflamed skin.
It also is extremely drying and irritant.
Dogs with allergic skin disease have very dry skin due to a faulty skin barrier.
Acidifying agents are going to further inflame and irritate the skin and thus worsening the itch.
Don't use it Sulfur products are extremely irritating to the skin because they dry it out.
This is the worst possible thing you could use in a dog with a faulty skin barrier and allergic skin disease.
Do not dry out the skin.
Neem is often promoted as an insect repellent.
This is true to a degree.
Neem stinks.
It smells really bad and if you put it on your dog, your house will stink.
Your carpets will be so badly affected with this pungent odour and when you pull them out and throw them away, your house will still stink.
Neem has absolutely no benefit to your dogs allergy problem and will do nothing to stop the itch.
Grapefruit seed extract may be full of anti oxidants but won't do anything to stop your dog scratching.
It is also marketed for flea and mange control.
Grape seed extract will not kill or repel fleas.
It will not kill mange.
This is an outright lie.
Tea tree oil is marketed as a cure for everything and especially skin problems.
Dogs with allergic skin disease are missing a protein in their protective skin barrier that means water escapes from the skin making it very dry.
Acidic products which further damage this defective barrier and further dry and irritate the skin are absolutely the worst things you can use.
Do not use acidic products or soaps on dogs with allergic skin disease.
This makes the itch worse and delays healing further.
Tea tree oil does not soothe red, inflamed, traumatised skin that has been scratched.
It stings.