Can you be allergic to human hair? (2024)

Asked by: Brandon Grooco*ck (age 12)

No. For that matter you can’t be allergic to animal hair, either. That’s because all mammal hair has the same basic chemical structure: it’s almost entirely made of the protein keratin. Our immune systems are exposed to the keratin in our own skin and hair continuously, so we never develop an allergic response to it.

Pet allergies are actually a reaction to substances in the animal’s skin cells, sweat and saliva (collectively known as dander) that get transferred to the fur during grooming. Animal dander is chemically different enough from our own sweat and saliva that our immune system treats it as foreign. Sometimes this results in an inappropriately strong reaction – an allergy. But humans are genetically so similar that we don’t have different dander compounds to each other.

A 2005 study at the National Institute of Environmental Medicine in Sweden, however, found that we can trap the dander from our pets in our own hair. So you can suffer an allergic reaction to an animal just by coming into contact with its humanowner’s hair!

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Can you be allergic to human hair? (2024)

FAQs

Can you be allergic to human hair? ›

P.S. Although it is possible for people to be allergic to general things such as sweat, sperm, or human hair, those situations are usually not limited to reactions to one individual.

Is it possible to be allergic to hair products? ›

If your scalp or skin becomes itchy, red, or irritated after coming in contact with rinse-out or leave-in hair products, it's possible that you may be allergic to one or more of the ingredients they contain.

What does hair allergy look like? ›

If you're mildly irritated by PPD, you may find that your scalp, neck, forehead, ears or eyelids become irritated and inflamed after using hair dye. The skin exposed to the PPD may become red, swollen, blistered, dry, thickened and cracked.

Are people allergic to fur or hair? ›

It's estimated that up to 20% of the world's population has an allergic reaction to pets with fur or feathers, including cats, dogs, guinea pigs, and birds. Common reactions to a cat can include: Frequent sneezing and coughing. Runny or stuffy nose, nasal congestion.

Can long hair cause allergies? ›

However, hair color and length have no influence… While studies have demonstrated that hair length and color have no influence on Fel d 1 production, there is one physical factor that does appear to correlate: sex… The most common recommendation for allergy sufferers is to avoid the allergen.

What is hair allergic reaction? ›

Once sensitized, the affected skin will usually become inflamed and red when exposed to the offending allergen. The scalp, ears, beard, or neck may become red and inflamed. The eyes also may itch, and the eyelids may swell as the reaction develops.

What are the most common hair products allergies? ›

Hair products contain many allergens that can potentially cause contact dermatitis as well as immediate-type hypersensitivity reactions. PPD, fragrance, and ammonium persulfates are the most common allergens found in hair products. The gold standard test to diagnose allergic contact dermatitis is via patch test.

Can you get anaphylaxis from hair products? ›

Hair Dye Allergy Symptoms

Rashes are less common on the scalp because the skin is thick, but you may feel a tingling or burning sensation and notice some generalized redness. It's rare, but hair dye chemicals can cause a potentially life-threatening allergic reaction called anaphylaxis.

How do I know if I am allergic to hair products? ›

Shampoo allergy symptoms may depend on the chemical(s) listed in the ingredients. The most common symptoms, which can appear between 24 to 48 hours, include: Red skin on the neck, face, upper torso, and hands. Scaly patches on the scalp, face, ears, and back of the hands.

Why does my hair give me allergies? ›

Some hair products, especially dense, heavier formulas, such as gel and mousse can leave a tacky finish on the hair, making it easier for pollen or other allergens to latch on—and stay put.

How long does hair allergy last? ›

These symptoms occur one to two days after colouring. The user may also experience swelling, especially in the forehead and around the eyes. The allergic reaction can last from about one week to several months.

Are people allergic to hair or saliva? ›

When you have a pet allergy, you are not allergic to the pet's hair, fur, or feathers. You are allergic to the protein that is found in the pet's dander (dead skin cells) saliva, and urine. The hair, fur, or feathers collect the dander. It can also carry other allergens like dust mites, mold, and pollen.

Is allergic to fur rare? ›

Pet Allergy: Are You Allergic to Dogs or Cats? - Allergies to pets with fur are common, especially among people who have other allergies or asthma.

How do I stop being allergic to fur? ›

Can you get rid of pet allergies? You can't get rid of pet allergies. However, you can take OTC antihistamine pills, nasal corticosteroids and nasal antihistamines to treat your symptoms. For some people, allergy shots (immunotherapy) offer a long-term solution to managing pet allergies.

Do fur allergies go away? ›

Outgrowing allergies to animals is possible but not probable. Also, even those allergies can go away; they can come back again later in life. Keeping pets will not help to acclimate to allergies either. For some people, allergy symptoms can be worse in some seasons, especially in the heat when animals shed more.

Can people be allergic to fake hair? ›

The short answer is yes. Much like synthetic fragrances and preservatives that are used in cosmetics and certain hair-care products, people can have a synthetic hair allergy. They may experience adverse effects like itching, irritation, and redness when the hair comes in contact with their skin.

Can you get contact dermatitis from your hair? ›

Contact Dermatitis (also known as Irritant or Allergic Dermatitis, or Contact Eczema) is caused by skin reacting to something external that it is, or has been, in contact with. Contact Dermatitis on the scalp is caused by a reaction to the chemicals in some shampoos, hair dyes or other hair grooming products.

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