IngredientsCandelilla wax (CW) is a wax obtained from the leaves of a small shrub native to northern Mexico and the southwestern United States, Euphorbia cerifera and Euphorbia antisyphilitica, from the family Euphorbiaceae. Other species from which candelilla wax can be obtained include Pedilanthus pavonis, which are found in the dry regions of northern Mexico and to a lesser extent in southern Texas, Arizona, and California in the United States. The primary commercial source is Euphorbia antisyphilitica Zucc., which is the species most extensively studied in the scientific literature.
The source plant, Euphorbia antisyphilitica, is a small deciduous shrub that grows wild across the Chihuahuan Desert, stretching from west Texas down through the Mexican states of Chihuahua, Coahuila, and Durango. It produces dense, upright stems that reach about three feet tall and spread roughly three feet wide. The stems have a grayish-green color and are coated in a thick layer of wax, which the plant produces naturally to retain moisture in arid conditions.
Candelilla wax is traditionally extracted from E. antisyphilitica, which is harvested in wild nature. The wax forms a plant protection system to reduce excessive water loss. During the wet season, wax deposits on the stem surface are minimal because there is no need for plant desiccation.
The Spanish common name candelilla means "little candle," a reference to the candle-like shape of the plant's upright stems and their highly flammable wax coating. The specific epithet antisyphilitica reflects a historical folk-medicine use: the white latex was employed in Mexico as a purported remedy for syphilis and other sexually transmitted diseases. This use is not supported by modern evidence.
Candelilla wax carries INS No. 902 and CAS No. 8006-44-8, and is described as a yellowish-brown hard, brittle, lustrous solid with an aromatic odour when heated. In the European Union it is designated E 902. Its INCI (International Nomenclature of Cosmetic Ingredients) name is Euphorbia Cerifera (Candelilla) Wax. In the European Pharmacopoeia it is covered under EDQM Monograph 69, and in the EU it carries EINECS number 232-347-0.
Crude candelilla wax is obtained by first boiling the dried stalks of the candelilla plant in water acidified with sulfuric acid to release the wax. The molten wax, known as cerote, is then skimmed off and allowed to solidify. It is transferred to lead-lined tanks for refining by treatment with sulfuric acid.
The entire aerial portion of the plant is cut at ground level, leaving only the rootstock, from which the shrub regenerates within approximately three years. The freshly harvested stems are boiled in large open vats of water mixed with a small amount of sulphuric acid. The heat melts the wax, which rises to the surface and is skimmed off. The wax solidifies on cooling and is collected for refining. The plant residues are dried in the sun and used as fuel for the next extraction — a remarkably closed-loop process.
A comparative study was carried out on the chemical, structural and thermal properties of candelilla wax from four wax-producing communities in Mexico, which was obtained by two extraction processes: the conventional one using sulfuric acid (SA) and an eco-friendly alternative process using citric acid (CA) as the extracting agent. The waxes obtained by the environmentally friendly process showed differences in their physicochemical properties when compared to waxes from the conventional process. In addition, they showed some improvements, such as lighter shades and harder waxes, suggesting that the new environmentally friendly process is a viable option.
This traditional process has been used in northern Mexico for well over a century, and the region remains the world's primary source of candelilla wax.
Candelilla wax is available commercially in several physical forms depending on the intended application. These include refined flakes, pellets or granular beads (commonly approximately 1 mm particle size), pressed blocks, and as a component in microemulsions or nanoemulsions for coating applications. Pharmaceutical-grade material is available that complies with the NF (National Formulary) monograph and is suitable for food, pharmaceutical, and nutraceutical applications. The wax is oil-soluble and insoluble in water, making it compatible with oil-based and anhydrous formulations across industries.
Close to the Mexico-Texas border, along the mesa's western edge, archaeologists found a series of red and yellow rock paintings between 1,500 and 4,000 years old which were drawn with a mixture of mineral pigments and candelilla wax. This represents the earliest documented use of the substance by human populations, demonstrating its role as a binding medium in pigment preparation by pre-Columbian Indigenous peoples of the Chihuahuan Desert region.
Long before candelilla became an industrial ingredient, Indigenous peoples and rural communities in northern Mexico recognized its potential. Oral histories and limited written records hint that candelilla served minor roles in crafts or small-scale applications. Some locals might have used the wax to waterproof tools or create rudimentary candles—after all, the name suggests a clear link to candle making.
The folk and traditional uses of the plant and its wax in northern Mexico encompassed topical and medicinal applications, particularly for skin conditions. The specific epithet antisyphilitica reflects a historical folk-medicine use: the white latex was employed in Mexico as a purported remedy for syphilis and other sexually transmitted diseases. The wax itself was used regionally in the preparation of salves and protective skin preparations, leveraging the physical barrier properties of the solidified wax.
In Higueras, a Mexican village in the province of Nuevo León, the Candelilla Festival takes place on 12th December. During the festival, the bishop of Monterrey blesses the piles of candelilla bushes with holy water. Then the village elders set fire to the piles. Without fuel or paper, the candelilla bushes quickly begin to blaze and within a few minutes everything has turned to ash. The villagers dance to traditional music and honor the remains of the burnt candelilla. This festival combines ancient customs of the indigenous Mexican population with Christian tradition.
During the late 19th and early 20th century, candelilla caught the attention of entrepreneurs seeking alternatives to traditional wax sources like beeswax or carnauba. With technological shifts spurring demand for polishes, lubricants, and various consumer goods, candelilla wax found an eager market. Collectors in northern Mexico harvested the plants in significant quantities, boiling them to separate the precious wax. By the early 1900s, candelilla extraction became a full-blown industry in certain border regions.
In the 1960s and 1970s, Texas Historical Commission archaeologists surveying the rugged west Texas lands along the Rio Grande encountered a fascinating small-scale industry centered around candelilla. While growth of the stalky, leafless plant was ruled largely by the whims of nature, the harvesting and extraction of the product—a high-quality wax—was dependent solely upon the ingenuity and sweat of Mexican laborers following decades-old traditions. Wax makers (candelilleros)—many of them working alone in remote areas—cut massive stacks of the plant by hand, then boil it in jerry-rigged metal vats to extract the wax.
With a melting point of 68.5–72.5 °C (155–162 °F), candelilla wax consists mainly of hydrocarbons (about 50%, chains with 29–33 carbons), esters of higher molecular weight (20–29%), free acids (7–9%), and resins (12–14%, mainly triterpenoid esters). The high hydrocarbon content distinguishes this wax from carnauba wax.
It is composed of about 20–29% wax esters, 12–14% alcohols and sterols, 49–50% hydrocarbons, 7–9% free acids, 2–3% moisture, and 1% mineral matter. The chemical and physical properties of the wax vary with the age of the plant and the year in which it is collected.
The composition of unhydrolyzed candelilla wax varies with the season when the plant was harvested, age of plant, region, and climate. The average candelilla wax constituents by weight are hydrocarbons (42%), wax, resin, and sitosteroyl esters (39%), lactones (6%), free wax and resin acids (8%), and free wax and resin alcohols (5%).
Candelilla wax consists primarily of odd-numbered saturated straight-chain hydrocarbons from C29 to C33, together with esters of acids and alcohols with even-numbered carbon chains from C28 to C34. The most abundant n-alkane, C31, comprises more than 80% of total n-alkanes.
The chemical composition of candelilla wax is mainly hydrocarbons (n-alkanes), 50–55%, with C31 (hentriacontane) as the major component. In addition to that, it contains esters of fatty acids with carbon numbers varying from 16 to 34, and fatty alcohols with carbon numbers varying from 22 to 34, with free fatty acids and free fatty alcohols.
Free acids, free alcohols, sterols, neutral resins, and mineral matter (<1%) are also present. The resin fraction consists primarily of triterpenoid esters, which are secondary metabolites characteristic of the Euphorbiaceae family.
Candelilla wax is hard and brittle. It is insoluble in water, but soluble in many organic solvents. The chemical and physical properties vary with composition. Generally melting points range from 68.5°C to 72.5°C, relative density at 15°C is 0.950–0.990, acid number is 12–22 mg KOH/g, and saponification number is 43–65 mg KOH/g.
The candelilla plant has proven to be a good source of other useful phytochemicals such as fiber, wax, and polyphenolic compounds, including catechin and ellagic acid. It is important to note that these polyphenolic compounds are largely associated with the plant material (stem residues) remaining after wax extraction, rather than with the refined wax itself.
Previous findings reported by Rojas et al. observed that candelilla by-products are a source of phytochemicals such as flavonoids (catechin) and phenolic acids (gallic and ellagic acids), with potential industrial applications.
A study described for the first time an ellagitannin isolated from candelilla (E. antisyphilitica Zucc). No other phytochemical had been previously reported in E. antisyphilitica. This compound, named candelitannin, was isolated from wax-extraction residues.
The first study about the extraction of ellagic acid from E. antisyphilitica was reported by Aguilera-Carbo et al.; the authors reported that the candelilla plant has at least double the quantity of this phenolic compound than other plant materials such as Turnera diffusa and Jatropha dioica.
It has been established that candelilla bagasse fiber (CBF) comprises cellulose (45%), hemicellulose (16%), lignin (37%), pectin (1.8%), wax (0.5%), and water-soluble extract (8–12%), a composition that is similar to other natural fibers (i.e., sisal and jute fiber) with industrial applications.
The primary functional mechanism of candelilla wax in both food and topical applications is physical rather than pharmacological. Natural waxes are water-insoluble, solid mixtures of esters of long-chain fatty acids and long-chain alcohols (wax esters), hydrocarbons, and a variety of other lipophilic compounds. Waxes are widely distributed in nature, the commonest site of occurrence being in the surface lipid layer, where they help protect plants and animals against evaporative loss of moisture and noxious influences from the environment. When applied as a coating or formulated into a topical preparation, candelilla wax creates an occlusive film that limits transepidermal water loss.
The EFSA Panel considered that absorption of candelilla wax is expected to be low, and that upon absorption the components would be incorporated into normal metabolic pathways. The predominantly long-chain saturated hydrocarbon character of the wax makes it largely resistant to enzymatic digestion in the gastrointestinal tract, which underlies its very low bioavailability when ingested and its toxicological inertness at use levels.
Oleogels are molecular gels formed by self-assembled supramolecular structures that create a bicontinuous network system on a colloidal scale, in which vegetable oil is trapped by a three-dimensional gelator network. Candelilla wax achieves this by crystallizing into a structured network upon cooling, immobilizing liquid oil within the matrix. Some researchers have used vegetable waxes to create oleogels, indicating that approximately 3–6% candelilla wax, 5–15% carnauba wax, and 5–10% beeswax are needed to produce stable semisolid structures.
The antimicrobial activities exhibited by the phenolic-rich extracts from candelilla plants may be attributed to the interaction of these compounds with the cell membrane, causing several modifications to it and changes in various intracellular functions. This mechanism relates to the polyphenolic byproduct fraction of the plant rather than to the refined wax per se.
The principal food applications of candelilla wax include its uses as a glazing and surface-finishing agent, a component of chewing gum, and as a carrier for food additives (including flavours and colours).
The EU permits the use of candelilla wax as a component of glazing agents for confectionery (including chocolate), small products of fine bakery ware coated with chocolate, snacks, nuts, coffee beans, dietary food supplements, and certain fresh fruits for surface treatment at quantum satis levels.
Evidence type: Regulatory evaluation; extensive in-use evidence from decades of commercial food application. No controlled clinical trials have examined health outcomes from this use specifically. The evidence base for safety in these applications comes from regulatory reviews (JECFA, EFSA; see Section 8).
A growing body of laboratory and food-technology research has investigated candelilla wax as a key structuring agent in oleogels, which are proposed as replacements for solid saturated or trans fats in bakery and other food products.
Oleogelation is a strategy to reduce health problems derived from the use of saturated fats. In one study, oleogels were produced by adding organic candelilla wax at 3% (OC03), 6% (OC06), and 9% (OC09) to extra-virgin linseed oil, and then characterized by their physicochemical properties. The physicochemical and sensorial properties of five cookie formulations were evaluated. Organic candelilla wax influenced the oleogel formulations, giving higher values of color (L* and b*), texture, acidity index, and melting point.
One study evaluated the impact of substituting saturated solid fat (margarine) with candelilla wax/canola oil oleogels, either completely or partially (0%, 25%, 50%, 75%, and 100%), on morphostructural and sensory properties of sponge cake bread. As oleogel content increased in bread formulation, strong network structures favored the retention of a greater amount of gas.
By introducing oleogels as ingredients of baked cakes, the levels of saturated fatty acids in the cakes were reduced from 58% to levels as low as 14%–17%.
Canola oil was structured with three natural waxes (candelilla wax, carnauba wax, and beeswax) and their potentials as solid fat replacers were evaluated for low saturated fat meat analogues. The wax-based oleogels retained solid fat at higher temperatures compared to coconut oil. Candelilla wax oleogels showed the highest hardness at room temperature.
Oleogels have also been used as controlled release systems for lipophilic bioactive compounds, increasing the bioavailability of fat-soluble molecules in functional foods and nutraceuticals.
Evidence assessment: All evidence in this area is preclinical or food-technology focused (bench-scale studies measuring physicochemical and sensory properties). No human clinical trials have evaluated the effect on cardiovascular risk factors or other health outcomes from consuming candelilla wax oleogel-containing foods. The potential nutritional benefit of fat reformulation is theoretically grounded but not yet demonstrated in human studies.
Phytochemicals of the candelilla plant have the potential to be used in several processes in food, cosmetic, and biotechnological industries, as they have demonstrated antimicrobial and antioxidant properties (phenolics and wax), good barrier properties (wax), and reinforcing and biotechnological properties (fiber).
Candelilla byproducts also contain other bioactive phenolic compounds that have been related to the antimicrobial activities of candelilla extracts against Erwinia amylovora, Xanthomonas axonopodis, and Clavibacter michiganensis. According to the authors, polyphenolic compounds from the hydro-alcoholic extracts obtained from the candelilla byproducts are responsible for the inhibitory effect against the pathogenic bacteria. This antimicrobial potential could be related to the presence of ellagitannins such as candelitannin in these plant materials, which has shown effective antifungal properties against four phytopathogenic fungal strains: Alternaria alternata, Fusarium oxysporum, Colletotrichum gloeosporioides, and Rhizoctonia solani.
In one study, candelilla wax edible coatings combined with Flourensia cernua bioactives demonstrated inhibition of B. cinerea (35%), C. gloeosporioides (39%), and F. oxysporum (6%). This could be due to the combination of F. cernua extract with the other components of the edible coating, such as candelilla wax, resulting in a better antimicrobial capacity. Antifungal activity of F. cernua can be referred to the presence of bioactive compounds, such as gallic acid, luteolin 7-O-rutinoside, and apigenin galactoside arabinoside.
Evidence assessment: All antimicrobial evidence is in-vitro (cell-free or microbial culture systems) or applied to food-preservation models. Importantly, the antimicrobial effects described are primarily attributable to the polyphenolic byproduct fraction (residues remaining after wax extraction), not to the refined wax itself. No human clinical evidence exists for antimicrobial applications of candelilla wax or its plant extracts.
An alternative extraction technique, ultrasound-assisted extraction, was used to extract the polyphenolic fraction from two different residues of the candelilla plant (Euphorbia antisyphilitica). These metabolites were further analyzed to evaluate their bioactivity as antioxidants. In addition, their functional groups were identified by Fourier transform infrared (FTIR) spectroscopy. The antioxidant assays showed statistically significant differences between the phenolic extracts, with citric acid residues (CAR) exhibiting a higher oxidant effect than sulfuric acid residues (SAR). The CAR from San Jerónimo (SJ) cultivar showed decreased IC50 values (179.441 ± 7.92 μL mL⁻¹, DPPH•), and its polyphenolic fraction was able to inhibit lipid oxidation (70.31 ± 2.50%).
The study demonstrated that candelilla by-products from citric acid-wax extraction have a polyphenolic fraction with strong antioxidant activity, which may be useful in food and pharmaceutical products.
Evidence assessment: Antioxidant activity has been demonstrated in vitro using DPPH radical-scavenging and lipid oxidation inhibition assays. This evidence pertains specifically to polyphenolic fractions extracted from plant residues after wax extraction, not to refined candelilla wax itself. No human clinical evidence exists.
In pharmaceutical and cosmetic contexts, candelilla wax functions mechanically as an emollient, film former, and structuring agent. Candelilla wax functions as a thickening and hardening agent, a plasticizer, a viscosity modifier, an emollient, and a skin-protective barrier agent that helps prevent the skin from losing moisture.
In pharmaceuticals, the wax is used as a coating for tablets and capsules, which aids in swallowing and can help control the release of active ingredients.
Evidence assessment: Evidence for topical skin effects is primarily functional (physical barrier action is well-characterized mechanistically) and is based on decades of cosmetic formulation experience rather than controlled clinical trials. No peer-reviewed randomized controlled trials specifically assessing clinical skin outcomes (e.g., transepidermal water loss, wound healing) in human subjects using candelilla wax alone have been identified in the literature.
Candelilla wax plays a vital role in pharmaceutical and dental applications. It is a coating agent for tablets and capsules, enhancing swallowability and facilitating the controlled release of active ingredients. This wax's smooth and glossy texture makes it an excellent choice for coating pills, ensuring easier ingestion.
Evidence assessment: Use as a pharmaceutical excipient is supported by inclusion in official pharmacopoeial monographs and regulatory approvals. No clinical trials specifically assessing the contribution of candelilla wax to drug release profiles in humans have been identified in freely accessible peer-reviewed literature.
Because candelilla wax is primarily used as a functional excipient rather than as a dietary supplement with a defined therapeutic dose, dosage data in the literature are reported in terms of formulation concentrations or food-use levels rather than as therapeutic doses.
Candelilla wax is an example of a plant-derived wax affirmed as Generally Recognized as Safe (GRAS) by the United States Food and Drug Administration (FDA) for expanded food innovation use (21 CFR § 184.1976).
The EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) delivered a scientific opinion re-evaluating the safety of candelilla wax (E 902). Candelilla wax (E 902) is authorised in the EU as a food additive as a glazing agent. It has been evaluated by the Scientific Committee on Food (SCF) and by the Joint FAO/WHO Expert Committee on Food Additives (JECFA).
Candelilla wax has been reviewed by the Joint Food and Agriculture Organization (FAO)/World Health Organization (WHO) Expert Committee on Food Additives (JECFA) and the European Food Safety Authority (EFSA), both of which deemed it to be of no safety concern.
Candelilla wax is also listed as a permitted additive in the legislation of Brazil, although additive functions and levels of use are not specified.
The EFSA Panel considered that "absorption of candelilla wax is expected to be low, and that upon absorption the components would be incorporated into normal metabolic pathways." Overall, the Panel considered that the available data suggest that candelilla wax is not genotoxic.
The JECFA Committee felt that the deficiencies noted in the individual studies, particularly in the light of current criteria, were counterbalanced to some extent by the consistent absence of adverse effects, and concluded that the present functional uses (glazing agent, component of chewing-gum base, surface-finishing agent, and carrier for flavour) did not raise any toxicological concerns.
The Panel did not establish an acceptable daily intake (ADI) as it said long-term toxicity data on candelilla wax were lacking. This is a notable gap: the absence of an ADI does not indicate a finding of risk, but rather reflects the absence of chronic toxicity studies sufficient to establish a formal numerical threshold under current regulatory standards.
A case report documented in archival pathology literature (Duboucher et al., 1989, as cited in the EFSA 2012 opinion) described diffuse storage of vegetable wax hydrocarbons of dietary origin in one patient, suggesting that while absorption of candelilla wax hydrocarbons is generally expected to be low, unusual deposition may theoretically occur in certain individuals or at high cumulative exposures. This represents an isolated report in older literature and does not constitute established clinical risk.
No specific drug interactions with candelilla wax have been identified in the peer-reviewed literature reviewed here. Its primary role as an inert excipient in pharmaceutical tablet coatings means it is not expected to interact pharmacodynamically with active drugs. In pharmaceutical coatings, its physical properties may influence dissolution rates of coated tablets, which is an intended formulation-level effect managed by pharmaceutical manufacturers.
Candelilla wax is valued as a plant-based, vegan alternative to beeswax, offering similar hardness and binding capabilities. It does not derive from animals and does not contain known protein allergens. No published clinical reports of allergic sensitization specifically to candelilla wax have been identified in the sources reviewed.
This natural raw material is used in cosmetics, food, and electronics. FSC Mexico promotes a standard that recognizes territorial diversity, including non-timber forest products such as candelilla. The commercial harvesting of Euphorbia antisyphilitica is subject to oversight in Mexico because of the ecological importance of the Chihuahuan Desert shrubland ecosystems. Overharvesting has been a historical concern; sustainable harvesting protocols and FSC certification programs are now actively being developed.
Health conditions that Candelilla wax may help support.
Body systems that Candelilla wax may help support.
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