Llama fibre and wool: structure, microns, dehairing and textile properties

Llama fibre (Lama glama) is a natural Andean protein fibre whose textile qualities depend directly on the animal's morphological variety and whether the fleece undergoes dehairing (separating coarse outer guard hair from the fine inner undercoat). Unlike sheep's wool, llama fleece is virtually free of lanolin, features a partially hollow medullated core that delivers high thermal insulation at low weight, and occurs in over twenty natural shades ranging from ivory white and warm fawn to deep espresso and jet black. [1, 2]

Fleece architecture: double coats and Ch’aku vs. Q’ara llamas

The FAO camelid husbandry manual explains that traditional llama coats evolved a double-coated structure adapted to shield the animal from both intense high-altitude ultraviolet radiation and freezing puna winds: [1]

• Outer guard hair: Longer, straighter and coarser fibres (typically 35 to 60+ microns in diameter) that form a weather-resistant outer coat shedding light rain, snow and dust.
• Fine undercoat (down or crimped fleece): Shorter, wavy and soft fibres (20 to 30 microns in diameter) growing densely next to the skin to trap a warm insulating air layer.

Andean and modern breeding programmes recognise two primary morphological types of llamas with distinct textile profiles: the Q’ara (classic or short-coated llama), with minimal wool on the neck and legs and a higher proportion of strong guard hair, historically bred for pack caravans and durable ropes or sacks; and the Ch’aku (or T’amphulli / woolly llama), bred for a denser, more uniform fleece with reduced guard hair suitable for fine handspinning and knitwear. [1]

Micron comparison: llama fibre vs. alpaca, vicuña and sheep wool

In textile science, next-to-skin comfort is governed primarily by mean fibre diameter measured in micrometres or microns (µm): fibres thicker than ~30 microns resist bending against human skin and cause a prickle sensation. Distinguishing unseparated raw llama fleece from dehaired llama undercoat is therefore essential: [1, 2, 3]

Technical comparison of fibre diameter and properties across camelids and sheep wool [1, 2, 3]

Fibre type	Mean diameter (µm)	Fleece structure	Lanolin content	Primary textile uses
Dehaired llama (fine undercoat)	20 – 28 µm (down to <21 µm in crias)	Fine undercoat mechanically or manually separated from guard hair.	Virtually none (<0.5% surface lipids)	Soft sweaters, shawls, scarves and next-to-skin knitwear.
Unseparated llama (mixed coat)	30 – 55+ µm	Natural blend of soft undercoat and strong outer guard hairs.	Virtually none	Rugs, tapestries, outer ponchos, saddle blankets, pack sacks and Andean cordage.
Alpaca (Huacaya & Suri)	18 – 28 µm	Dense single-coat fleece with minimal guard hair.	Virtually none	Fine knitwear, woven suiting and traditional Andean textiles.
Vicuña (Vicugna vicugna)	12 – 14 µm	Double coat; only the ultra-fine dehaired undercoat is spun. [3]	Virtually none	Ultra-luxury garments governed by strict CITES traceability. [3]
Sheep wool (Merino / coarse)	17 – 24 µm (Merino); 28 – 40 µm (coarse)	Keratin fibre with prominent cuticular scales and high crimp.	High (5% – 15% of raw grease weight)	Knitwear, tailored woollens, carpets and industrial felting.

Physical properties: medullated warmth, lanolin-free washing and strength

Under the microscope, South American camelid fibres exhibit three structural traits that define their performance: [1, 2]

1. Insulating medullated core: Many llama fibres contain a microscopic hollow or cellular medulla running along their axis. This trapped air lowers specific gravity and boosts thermal resistance, creating garments that are warm and breathable yet lighter than coarse sheep's wool of equivalent thickness.
2. Absence of lanolin and hypoallergenic comfort: Unlike sheep, llamas do not secrete heavy lanolin wax onto their fleece. Scouring raw llama fibre requires no harsh chemical solvents or boiling water, yielding 85% to 90% clean fibre weight after washing, while wearers sensitive to wool grease tolerate dehaired llama garments well.
3. Smoother cuticular scales and high tensile strength: The microscopic surface scales of llama fibre lie flatter than those of sheep's wool, imparting a subtle natural lustre and high abrasion resistance, though garments should be washed gently to prevent stretching.

Ethical shearing, dehairing and Andean spinning

The Merck Veterinary Manual emphasises that regular shearing (annually or biennially depending on fleece growth and regional climate) is a vital animal welfare requirement to prevent summer heat stress and allow keepers to inspect skin health and body condition. Shearing is performed with calm restraint using hand shears or wide-comb electric clippers, leaving a thin protective cover over the back in high-UV environments to prevent sunburn. [4]

After shearing, the fleece is skirted (separating the prime dorsal blanket or saddle from coarser neck and leg fibres) and dehaired. In highland communities, spinners hand-pick coarse guard hairs before spinning on a drop spindle (pushka), while modern textile mills use centrifugal dehairing carders to isolate the soft undercoat. Read more about pre-Columbian weaving in our Andean textile art guide and compare species in our four-camelid identification guide. [1]

Frequently asked questions about llama wool

Does llama wool feel itchy against the skin?
That depends entirely on whether the fibre has been dehaired. Yarn spun from unseparated dual-coated fleece retains guard hairs thicker than 35 microns, which feel prickly against bare skin and are best suited for outerwear or rugs. By contrast, dehaired llama undercoat (20–26 microns) or baby llama fibre feels remarkably soft and smooth. [1]

How should you wash a llama-fibre garment?
Hand-wash in cool water (below 30 °C) using a mild pH-neutral wool detergent, without wringing or twisting; gently press out excess water in a towel and dry flat away from direct heat or sunlight. [1]