A screening agent called "fragrance mix" is used to pinpoint the cause of a large percentage of skin allergies. This fragrance mix is known to contain eight skin sensitizers and most of these fragrances contain several of these irritants.

Here are the irritants:

[Alpha]-amyl cinnamic aldehyde

This is found in perfumes, cosmetics, soaps, industrial products and toothpaste.

Cinnamic alcohol

This is found in perfumed cosmetic products, deodorant, paper, laundry products, food flavoring and toothpaste.

Cinnamic aldehyde

This is found in toothpaste, bath oils, hair cosmetics, lipsticks, mouth washes, soaps, detergents, food flavoring, vermouths, bitters,and chewing gum.

Studies have shown that cinnamic aldehyde binds with proteins in the skin to cause an allergic reaction.

Eugenol

This is used in colognes, toilet waters, tonics, dressings, hair cosmetics, periodontal packing, dental impression material, aftershave, perfumes, hair cream, inhalants, antiseptics and toothpaste.

Geraniol

This is used in perfumes, fragrance, facial make up and skin care products.

Hydroxycitronellal

This is used in perfumes and cosmetic products, fragrance, eye cream and aftershave.

Isoeugenol

This is a clove scent and is used in perfumery and as fragrance in eye cosmetics and aftershaves.

Oak moss

This is found in perfumes, colognes, aftershaves and scented products for men.