DermNet provides Google Translate, a free machine translation service. Note that this may not provide an exact translation in all languages


Contact allergy to propolis

Author: Dr Delwyn Dyall-Smith FACD, Dermatologist, 2010.

Table of contents

What is propolis?

Propolis is the glue made by honeybees to build, repair and protect their hives. It consists of partially digested resins from a variety of tree buds and barks mixed with beeswax. In Europe, it derives mainly from poplar buds, but conifers are also used. Propolis, therefore, is a complex mixture comprising balsams and resins, waxes, essential oils, pollen and cinnamyl alcohol, vitamins A, B, C and E, flavonoids and minerals.

A number of other substances that are related to propolis may be listed as ingredients, particularly of cosmetics. Cera flava is the yellow wax produced from a honeycomb. Cera alba is the bleached form of Cera flava. It is used as an emulsifier and thickening agent in cosmetics and as a food additive (E901) for coating and glazing candy and fresh fruit. Other propolis-related substances include propolis cera, beeswax acid and synthetic beeswax.

Who gets contact allergic reactions to propolis and why?

Propolis is an increasingly important allergen, with European studies reporting positive patch test rates of 1.2 to 6.6%. In one series from Finland, the rate increased from 0.5% in 1995-7 to 1.4% in 2000-2. Another study in children reported an increase from 2% to 13.7% between 1995 and 2002; 75% of the patch test-positive children had used a natural product or alternative medicine remedy. In a 2010 Polish patch test study of children with chronic recurrent eczema and atopy, a positive propolis patch test was recorded in 16.5% of children aged 7-8 years and 5.4% of adolescents aged 16-17 years. Propolis was the second most common positive patch test allergen after nickel in children and the fourth most common in adolescents.

Paradoxically, contact stomatitis and allergic contact cheilitis to propolis have been reported in an HIV-positive patient taking a 30% propolis solution orally.

Exposure to propolis and propolis-related substances can occur in multiple settings.


  • Beekeepers – propolis allergy can develop after many years of exposure. In one study the average exposure time before developing propolis allergy was 9.5 years (range 0.1-35 years).
  • Violin makers and violinists – propolis has been a component of Italian varnish for centuries.
  • Shoemakers – beeswax is used for the seams of handmade boots and may be contaminated with propolis.
  • Timber cutters – including forestry workers and farmers, specifically cutting poplar trees.
  • Artists – moulding in beeswax


Oral hygiene products

Cheilitis due to propolis allergy

Therapeutic use

  • Propolis has been widely used in natural therapeutic products because of its purported antiseptic, anti-inflammatory, anaesthetic and anti-oxidant properties.
  • Propolis is advocated as a steroid- and chemical-free natural alternative.
  • Natural therapeutic products containing propolis include mouth lozenges, cough syrups, ointments, lotions, drops and oral pills.
  • Propolis has been commonly implicated in contact allergies complicating chronic venous insufficiency (5%) and anogenital disease (2.5%).


  • Honey — although propolis is usually completely removed it may be added for its purported therapeutic effect
  • Gloss — on fruit, candies, chewable vitamins, chewing gums

Stiffening agent

  • Ointments and creams

Modified-release oral preparations

  • To adjust the melting point of suppositories.

Biocosmetics and biotherapeutics appear to be the most common source of exposure to propolis in those sensitised to it.

The major allergens in propolis derived from poplar buds are caffeates. 3-Methyl-2-butenyl caffeate and phenylethyl caffeate are the main sensitisers. Benzyl caffeate, geranyl caffeate, benzyl salicylate, benzyl cinnamate, methyl cinnamate, ferulic acid and tectochrysin are also sensitisers present in propolis.

Propolis allergy often cross-reacts with Myroxylon pereirae (balsam of Peru) as there are 13 known constituents in common. Other recognised cross-reactions due to shared ingredients (commonly cinnamic acid, cinnamyl alcohol, vanillin) include:

  • Colophonium
  • Fragrance mix I
  • Carnauba wax (from the Brazilian carnauba palm) — used as an edible gloss finish.

Crossreaction with beeswax is uncommon but can occur, possibly due to contamination with propolis.

Contact with propolis can be direct, or, less commonly, airborne.

What are the clinical features of propolis allergy?

Contact allergy to propolis results in dermatitis or urticaria. Symptoms and signs include:

  • Itching, burning, pain
  • Localised swelling of the lips and tongue
  • Localised rash
    • hand dermatitis – common presentation
    • eczematous rash around the mouth (perioral eczema)
    • cheilitis – redness, scaling and crusting of the lips
    • stomatitis – including mouth ulcers
    • fiddler's neck
    • facial redness, itch and swelling if due to airborne contact
  • Urticaria
  • Throat complaints — difficulty swallowing or speaking
  • Systemic symptoms such as shortness of breath
  • Autosensitization dermatitis (rash at a distant site from primary contact) has been reported.

Reactions begin within hours to days of exposure in a previously sensitised patient. Initial sensitisation takes 10–15 days.

How is propolis allergy diagnosed?

The diagnosis of propolis allergy is made by patch testing with propolis 10% in petrolatum and the likely source ‘as is’ or diluted eg honey, cosmetic or therapeutic formulation. A flare of original dermatitis has been reported in association with positive patch test reactions.

Positive patch test to propolis

What is the treatment for propolis allergy?

Avoidance of propolis-containing products results in resolution of the reaction, but sometimes a further unidentified source of propolis exposure causes persistence of milder symptoms. It is therefore important to re-assess should the contact allergy symptoms not settle completely despite avoidance of the original source of propolis.

Beekeepers with allergic contact dermatitis of the hands due to propolis may be able to continue working with hives by wearing rubber or leather gloves.

In one case, ingestion of propolis-enriched honey as a capsule had no effect despite cheilitis/perioral eczema and positive patch test to honey and propolis.

Patients with known allergies to conifer, poplar, salicylates and Myroxylon pereirae are advised to avoid propolis due to shared allergenic constituents. It is important to be aware of the names of propolis-related substances as these also should be avoided.

Dermatitis is usually treated with emollients and topical steroids; urticaria is treated with oral antihistamines.



  • Bellegrandi S, D'Offizi G, Ansotegui IJ, Ferrara R, Scala E, Paganelli R. Propolis allergy in an HIV-positive patient. J Am Acad Dermatol. 1996;35:644. PubMed
  • Czarnobilska E, Obtulowicz K, Dyga W, Spiewak R. The most important contact sensitizers in Polish children and adolescents with atopy and chronic recurrent eczema as detected with the extended European Baseline Series. Pediatr Allergy Immunol. 2010; doi: 10.1111/j.1399-3038.2010.01075.x. PubMed
  • Garrido Fernández S, Arroabarren Alemán E, García Figueroa BE, Goienetxe Fagoaga E, Olaguibel Rivera JM, Tabar Purroy AI. Direct and airborne contact dermatitis from propolis in beekeepers. Contact Dermatitis. 2004;50:320–1. PubMed
  • Garrido Fernández S, Lasa Luaces E, Echechipía Modaz S, Arroabarren Alemán E, Anda Apiñániz M, Tabar Purroy AI. Allergic contact stomatitis due to therapeutic propolis. Contact Dermatitis. 2004;50:321. PubMed
  • Hasan T, Rantanen T, Alanko K, et al. Patch test reactions to cosmetic allergens in 1995-1997 and 2000-2002 in Finland--a multicentre study. Contact Dermatitis. 2005;53:40–5. PubMed
  • Hausen BM. Evaluation of the main contact allergens in propolis (1995 to 2005). Dermatitis. 2005;16:127–9. PubMed
  • Hay KD, Greig DE. Propolis allergy: a cause of oral mucositis with ulceration. Oral Surg Oral Med Oral Pathol. 1990;70:584–6. PubMed
  • Henschel R, Agathos M, Breit R. Occupational contact dermatitis from propolis. Contact Dermatitis. 2002;47:52. PubMed
  • Jacob SE, Chimento S, Castanedo-Tardan MP. Allergic contact dermatitis to propolis and carnauba wax from lip balm and chewable vitamins in a child. Contact Dermatitis. 2008;58:242–3. PubMed
  • Jensen CD, Andersen KE. Allergic contact dermatitis from cera alba (purified propolis) in a lip balm and candy. Contact Dermatitis. 2006;55:312–3. PubMed
  • Lee SY, Lee DR, You CE, Park MY, Son SJ. Autosensitization dermatitis associated with propolis-induced allergic contact dermatitis. J Drugs Dermatol. 2006;5:458–60. PubMed
  • Münstedt K, Kalder M. Contact allergy to propolis in beekeepers. Allergol Immunopathol (Madr). 2009;37:298–301. PubMed
  • Pasolini G, Semenza D, Capezzera R, et al. Allergic contact cheilitis induced by repeated contact with propolis-enriched honey. Contact Dermatitis. 2004:50:322–3. PubMed
  • Rajpara S, Wilkinson MS, King CM, et al. The importance of propolis in patch testing – a multicentre survery. Contact Dermatitis. 2009;61:287–90. PubMed

On DermNet

Books about skin diseases


Related information

Sign up to the newsletter