Alpaca

Overview

Production: more than 4,700 tonnes (Peru alpaca fiber production, 2025). Main producers: Peru. [5]

Hair from alpacas. Huacaya and Suri fleeces have different structures and textile effects.

Feel and behavior

Warm with a soft or silky handle depending on grade and construction.

Where you find it

Knitwear, scarves, blankets and coating fabrics.

Source and geography

The alpaca is a domestic South American camelid. Mitochondrial and microsatellite analysis by Kadwell and colleagues (2001) indicates that it descends from the wild vicuna rather than the guanaco, and they proposed the binomial Vicugna pacos; earlier work cited in that study dated domestication to about 6,000 to 7,000 years ago in the Peruvian Andes. Two fleece types are bred, Huacaya and Suri, and fleece type is reported to be controlled by a single dominant gene. Much published breeding data comes from the Pacomarca experimental farm of the Peruvian firm Inca Tops.

Worth knowing

• Under Peru's alpaca standard, the Baby class is defined by fineness and length, so fleece shorn from an adult alpaca can be sold as baby alpaca.
• Alpacas, llamas and Bactrian camels produced less methane per kilogram of body mass than roughage-fed ruminants in a 2014 chamber study, but about the same per unit of digestible fiber eaten.
• The Peruvian standard sets a minimum average fiber length for each class, 65 mm for Baby and 70 mm for the coarser classes, alongside diameter.

Types, grades and fabrics

Types and grades

Alpaca comes in two fleece types: Huacaya, dense and crimped, and Suri, with straight, lustrous locks. Peru's technical standard NTP 231.301 classifies sorted fiber by fineness and minimum average length: Baby at about 23 microns or finer (65 mm), Fleece 23.1 to 26.5 microns, Medium Fleece 26.6 to 29, Huarizo 29.1 to 31.5, Gruesa above 31.5, and Corta for short fiber of about 20 to 50 mm. Baby names a fineness class, not the animal's age, so fine fleece from adults can qualify. Processors also sell 'royal' or 'royal baby' lots, their own designation for the finest fiber, commonly described as under about 20 microns. Natural colors run from white through fawns and browns to greys and black, and color is sorted along with grade.

Fabrics and products

Huacaya is mostly spun into lofty knitting yarn for sweaters, hats, throws and blankets, including brushed yarns with a soft halo. Suri is usually combed and worsted-spun, giving drapey, lustrous woven suiting, coating and scarves, often blended with silk or fine wool. Because alpaca yarn is less elastic than crimpy wool, it is frequently blended with merino for shape memory, or with nylon for strength in socks. Coarser grades go into rugs, felts, insoles and upholstery. Undyed natural-color yarns are a notable product line, since the fiber arrives in many shades.

Buying and care

How to judge quality

Ask which grade or micron was used: Baby alpaca suits next-to-skin knits, while Fleece and coarser grades belong in outerwear, throws and rugs. Prickle rises with coarse and medullated fibers, so visible stiff, straight, chalky-white hairs in a soft-looking knit are a warning sign. Drape a knit over your hand and stretch it lightly; alpaca has less elastic recovery than wool, so heavy, loose knits can grow, and a dense gauge or wool blend helps. Check percentages: 'alpaca blend' may be mostly acrylic or wool. Brushed yarns can shed at first. If a product claims Responsible Alpaca Standard certification, the certificate should cover that product.

Care in detail

The care label governs. Hand wash in cool water (about 30 C or below) with a wool detergent free of enzymes and bleach, or use a wool cycle only if permitted. Support the wet garment, press water out without wringing, roll in a towel and dry flat, easing it to shape; never hang a wet alpaca knit, because it stretches. Do not tumble dry. Steam or press at the two-dot setting (up to 150 C) through a cloth, and steam brushed yarns rather than pressing them flat. Fold knits for storage instead of hanging them, keep them clean in sealed or breathable bags, and check for moth larvae. Remove pills gently with a comb.

Care at a glance

Use the garment label, support wet knits and dry flat. Store clean and protect from textile pests.

Environmental and social footprint

Peer-reviewed life cycle data for alpaca fiber are scarce, so claims that alpaca has a lower footprint than wool or cashmere should be treated as unquantified unless a study is cited. One relevant measurement exists: in respiration chambers, a 2014 study of alpacas, llamas and Bactrian camels on an alfalfa diet found about 0.32 liters of methane per kilogram of body mass per day, versus about 0.58 in literature data for roughage-fed ruminants, but no significant difference per unit of digestible fiber eaten; camelids simply eat less relative to their size. Much Andean fiber comes from high-altitude herding households, so price paid for raw fleece and grading fairness matter socially. Natural colors reduce dyeing. The Responsible Alpaca Standard covers welfare and land management where certified.

Tradeoffs

Fiber grading and sorting matter as much as origin. Animal care and producer livelihoods need separate attention.

A useful question to ask: What grade was used, and how are farms and processors identified?

Science

Data sheet

Protein-based natural material

Most hair is keratin; silk is a different protein-fiber system.

Structure and chemistry

Alpaca fiber is alpha-keratin with a cuticle of thin overlapping scales around a cortex, but unlike fine Merino wool a substantial share of fibers carries a medulla. Camelid laboratories classify fibers as non-medullated, fragmented, discontinuous, continuous or strongly medullated, and medullation rises with diameter. Reported mean fiber diameters span roughly 18 to 36 microns. Suri and Huacaya also differ at the surface: in a Peruvian comparison, Suri fleece had the highest share of fibers with fewer than eight cuticular scales per 100 microns of length, consistent with its smooth, lustrous locks, whereas Huacaya is selected for density and crimp.

From source to yarn

Research on follicle development shows that the secondary follicle population matures early in life, which supports an early first shearing. Shorn fleeces are skirted and then sorted by hand into fineness grades and natural colors, because diameter varies across body regions within a single fleece. Sorted fiber is scoured, carded and either combed into top for worsted yarn or spun on the woollen route. Coarse and medullated fibers cause prickle, so processors blend or remove them to limit the share of fibers above about 30 microns, while breeding programs attack the same problem upstream by selecting on mean diameter, its variation and medullation.

Performance in use

Like other keratin fibers, alpaca absorbs water vapor, chars and self-extinguishes rather than melting, and takes acid and metal-complex dyes on its amino groups; its wide range of natural colors means much yarn is sold undyed. Comfort depends more on the diameter distribution and medullation of a lot than on the animal name: medullated fibers resist bending and compression, raise the prickle factor, and look chalky beside dyed neighbors. Suri drapes and shines, while crimped Huacaya gives loft. The fiber is vulnerable to clothes moth and carpet beetle larvae and to strongly alkaline detergents.

How it is identified

Burn tests (indicative only, and to be done with care) show the burnt-hair smell and crushable ash of any keratin. Projection microscopy prepared under IWTO-8 and newer automated image systems measure diameter and classify medullation, and cuticular scale counts help separate Suri, Huacaya and llama fiber. For species, spectroscopy works better: a forensic study found infrared spectroscopy identified alpaca but could not separate vicuna from guanaco, while ambient-ionization mass spectrometry resolved all three. ATR-FTIR with chemometrics has also discriminated alpaca from cashmere, mohair, yak, camel, vicuna, llama and sheep fibers.

History

Timeline

1. c. 6,000 to 7,000 years agoAlpaca domestication in the Peruvian Andes is dated to this period in research cited by Kadwell and colleagues. [1]
2. 2001Genetic analysis placed the alpaca with the vicuna lineage and revealed extensive hybridization with llamas. [1]
3. 2014Respiration chamber measurements showed camelids, including alpacas, emit less methane per kilogram of body mass than roughage-fed ruminants. [4]
4. 2018Genetic parameters for medullated fiber in alpacas were published, supporting medullation as a selection criterion. [3]
5. 2022Peru's technical standard NTP 231.301:2022 set fineness and length classes for sorted alpaca fiber. [2]

Alpaca fiber belongs to a long Andean history of camelid husbandry and textile making. Modern sorting, spinning and export connect those landscapes with industrial and craft markets. Fiber grade and community context remain essential.

The deeper record

Andean camelids were nearly extirpated during the Spanish conquest, one reason the ancestry of alpaca and llama was long disputed; genetic analysis also revealed extensive hybridization between the two domestic forms. Modern alpaca improvement concentrates on fiber. The International Committee for Animal Recording recommends mean fiber diameter and its coefficient of variation as the first traits in breeding programs, and heritability studies from Pacomarca have added medullation as a selection criterion to reduce prickle. Genomic scans of that selected population now reveal selection signatures near hair-follicle genes. Alpacas are also kept in Europe for fiber and tourism, raising husbandry and welfare questions outside the Andes.

Labeling and law

In the US, the Wool Products Labeling Act of 1939 includes alpaca among the specialty fibers that fall within the statutory definition of wool, so the specialty fiber name may be used in place of the word wool with its percentage, and FTC rules exclude alpaca from the catch-all term fur fiber. In the EU, Annex I of Regulation (EU) No 1007/2011 lists alpaca among the fine animal hairs, followed or not by the word wool or hair. Textile Exchange's Responsible Alpaca Standard is a voluntary welfare and land-management certification; buyers should confirm that a certificate covers the specific product.

This describes what rules and standards cover. It is not legal advice; jurisdiction, product form and current rule text control.

Frequently asked

What does baby alpaca mean?

Baby alpaca is a fineness class, not an age. Under Peru's NTP 231.301 classification it covers fiber of about 23 microns or finer with a minimum average length, and it can come from adult animals with fine fleece. Some processors sell even finer 'royal' lots, which is their own designation.

Is alpaca warmer than wool?

No reliable general ranking exists. Warmth depends mainly on fabric thickness, trapped air and construction rather than the fiber name. Some alpaca fibers are partly hollow (medullated), but medullation is concentrated in coarser grades that are less used next to skin. Compare garments of similar weight and density instead.

Why does my alpaca sweater stretch?

Alpaca has little crimp and less elastic recovery than wool, so the weight of a knit, especially when wet, pulls it longer. Dry it flat, fold it for storage and choose dense knits or merino blends for heavy garments. Light steaming and reshaping can partly restore the fit.

Sources

• Food and Agriculture Organization: Harvesting of textile animal fibres
• Textile Exchange: Material standards
• Proceedings of the Royal Society B: Genetic analysis reveals the wild ancestors of the llama and the alpaca (2001)
• Animal: Genetic parameters for medullated fiber and its relationship with other productive traits in alpacas (2018)
• Animal: Hair follicle characteristics and fibre production in South American camelids (2010)
• Rapid Communications in Mass Spectrometry: Forensic identification of the keratin fibers of South American camelids by ambient ionization mass spectrometry (2020)
• Federal Trade Commission: Wool Products Labeling Act text
• MINCETUR (Peru): NTP 231.301:2022, Fibra de alpaca clasificada, quality requirements (presentation)
• Alpaca Export: Fiber processing
• PLOS One: Methane emission by camelids (Dittmann et al., 2014)
• Journal of Animal Breeding and Genetics: Genetic parameters for different types of medullated fibre in alpacas (2024)
• GINETEX: Care symbols (ISO 3758 care labelling system)
• Peru Informa: Peru se consolida como el principal productor global de fibra de alpaca con un volumen anual superior a las 4,700 toneladas

Cite this page

Chaos. (2026). Alpaca. In Fibers of Earth: An independent textile atlas. https://www.hendrickresearch.com/fibers/materials/alpaca/