Human Hair Grades Explained: Virgin, Remy, 6A to 10A

Why "6A" and "8A" Tell You Almost Nothing

Every hair extension listing from a Chinese factory carries a grade: 6A, 7A, 8A, occasionally 10A. Buyers treat that number like a specification. It is not one. There is no grading authority, no certification body, and no agreed definition behind those letters. Two factories can label identical bundles 6A and 10A, and neither is lying in any way you could prove.

The label originated in the 1990s as a marketing shorthand from Indian exporters. Six A meant top of the line. As competition tightened the number inflated, and today a 10A bundle is routinely sold at the same price as a 6A bundle from a more honest competitor. What actually separates a bundle that survives forty washes from one that tangles within three weeks is measurable, and none of it appears in the grade: cuticle direction, draw ratio, collection method, and chemical history.

This guide explains what those four things mean, how to test for them in about ten minutes with a sample, and how to write a purchase order that a supplier cannot quietly downgrade. If you are still choosing between suppliers, read our factory order checklist alongside this page.

What "Grade" Should Describe

A grade is only useful if it maps to something you can verify before payment and re-check after delivery. Here is the honest version of that mapping. The left column is what the label claims. The right column is what you can actually measure with a sample, a scale, and a ruler.

Note what is missing from the right column: nothing about softness. Softness is the easiest property to fake and the least predictive of how a bundle will behave in month four. Acid-washed non-remy hair is silkier than virgin hair on day one.

The Four Properties That Actually Determine Quality

1. Cuticle direction

Human hair is covered in overlapping scales that all point one way, from root to tip. When bundles are collected with the roots aligned, water and sebum travel down the strand the way they were designed to, and the hair resists tangling. When roots are mixed in both directions, the scales lock against each other. Every tangle a client complains about in month three is usually this, not dryness.

Aligned hair is called remy. Misaligned hair has to be rescued by an acid bath that dissolves the cuticle layer entirely. It feels wonderful for six to ten weeks because there is nothing left to catch on. Then the unprotected cortex starts fraying and the bundle becomes unusable.

2. Draw ratio

This is the single most under-specified number in the trade. A bundle is sold at a nominal length, say 18 inches, but human hair grows in different lengths and the shorter strands have to go somewhere. Single drawn bundles keep them. Double drawn bundles remove them. We cover the measurement in detail below.

3. Collection method and origin

Hair collected from one donor in one session behaves differently from hair swept off a salon floor. Single-donor hair has consistent texture, colour, and porosity, which matters enormously if you plan to bleach it. Blended hair from many donors can look identical in the pack and behave completely differently under lightener.

4. Chemical history

Three things destroy hair: lightener, permanent dye, and acid. Any of them reduces how many months a client gets before the ends thin out. Virgin means none of the three have been applied. The word is heavily abused, so treat it as a claim to test rather than a fact to trust.

Virgin, Remy, and Non-Remy: The Only Three Categories That Matter

If you ignore every grade label and ask only these three questions, you will make better purchasing decisions than most buyers in this industry.

Prices above are indicative factory-gate ranges for natural black, straight, machine weft as of early 2026. Treat them as a sanity check on quoted prices, not as a market index. For a full cost breakdown by specification, see our pricing and MOQ guide.

Strictly speaking, virgin is a subset of remy: hair cannot be virgin if the cuticles were stripped. In practice, sellers use the terms loosely, so the only reliable approach is to ask for both and test.

Single Drawn vs Double Drawn: The Weight Test

Picture a bundle of a hundred strands. Hair grows to different lengths, so an 18-inch bundle contains some 18-inch strands, some 15-inch, some 9-inch. Draw ratio describes how many strands actually reach the nominal length.

• Single drawn: roughly 50–60% of strands reach full length. The rest taper away. Cheaper, and fine for clip-in sets where the weft is folded over.
• Double drawn: 80% or more at full length, with the short strands pulled out. The bundle ends blunt instead of tapering.

Here is why it costs more than the price difference suggests. If you buy 100g of single drawn 18-inch hair, the usable full-length hair in that bundle is closer to 55g. To produce the same visual density at the ends, a stylist needs roughly 150g of single drawn versus 100g of double drawn. A bundle that looks like a bargain per gram can be the more expensive choice per finished installation.

How to check: take 20g from the top of the bundle, lay it flat, and measure the distance from the top tie to where the bulk of the strands end. Then find the shortest 20% of strands and measure them. On genuine double drawn hair the shortest group is within two inches of the longest. On single drawn it is typically four to six inches shorter.

The word "double drawn" is used freely in listings. The measurement above takes five minutes and settles it.

How to Test a Bundle in Ten Minutes

Order a sample before any bulk order. Not a photo, not a video, an actual bundle sent by courier. Then run these six tests in this order. Each one takes about a minute and each targets a different failure mode.

1. Wet comb test. Wet the bundle, apply a small amount of conditioner, and comb from mid-length to ends. Healthy aligned hair passes with almost no resistance. If it snags in the middle third, the cuticles are either misaligned or already damaged. This is the most reliable single test in the list.
2. Burn test. Cut three strands, hold them with tweezers over a flame. Real hair smells like burnt protein, burns slowly, and leaves ash that crumbles when rubbed. Synthetic melts into a hard bead and smells of plastic. A blend shows both behaviours, which is exactly what you need to catch.
3. Bleach spot test. Take a small section and apply lightener with 20-volume developer. Virgin and remy hair lifts evenly to a clean gold. Non-remy or heavily processed hair lifts patchily and often goes brassy or orange in streaks.
4. Stretch and release. Wet a single strand and pull gently. Healthy hair extends around 30% and springs back. Hair that has been over-processed snaps without returning.
5. Weigh and measure. Use a digital scale accurate to 1g and a tape measure. Confirm the bundle is actually 100g including the tie, and that the length is measured from the top of the weft rather than from the middle of the bundle. Suppliers who measure generously will fail this test.
6. Backcomb test. Hold the bundle at the top and comb downward against the grain near the weft. Shedding of more than a dozen strands from a new bundle indicates a weak weft, usually a sign of machine sewing with insufficient reinforcement.

Record the results per supplier. After three samples you will have a comparison that no grade label can give you.

Origin Does Not Mean What Suppliers Say It Means

"Brazilian hair" is a texture category in modern trade, not a statement about where the hair grew. Brazil consumes most of its own human hair domestically and exports very little; the price of genuine Brazilian raw hair makes it uncompetitive for volume wholesale. Most hair sold as Brazilian is Indian or Vietnamese hair selected for a similar wave pattern.

None of this is deception if the specification is written correctly. A bundle described as "body wave, Vietnamese origin" is honest and useful. The problem starts when a supplier substitutes a coarser batch for a finer one under the same label. That is why the wet comb test matters more than any certificate.

What This Means When You Place an Order

The right grade depends entirely on what your customer does with the hair, not on what the label says.

• Selling to salons doing colour work: you need reliable bleachability. Specify Vietnamese or Indian remy, virgin or lightly processed, and test the bleach spot before committing to volume.
• Selling clip-in sets to retail customers: single drawn remy is usually sufficient and keeps the price competitive. The weft is folded over, so draw ratio matters far less.
• Selling tape-in or pre-bonded: cuticle alignment is critical because the strands sit against the scalp for weeks. Non-remy hair in a tape-in installation becomes a matted complaint within two months. Our tape-in range is specified at remy minimum for this reason.
• Selling blonde or heavily lightened: only buy hair that has been tested at the target level. Very few suppliers will guarantee this, and the ones who will are worth keeping.

For weft-based volume orders, the specification line that matters most is cuticle direction plus draw ratio. You can browse our full hair extensions range to see how these specifications are stated per product, for example the virgin Brazilian weft and the body wave virgin weft.

Five Myths That Cost Buyers Money

1. "8A is better than 6A." The number is set by the seller. Ask what the bundle measures instead, and the question becomes answerable.
2. "Remy means virgin." Remy describes cuticle alignment. Virgin describes chemical history. Hair can be remy without being virgin, and the reverse claim is impossible.
3. "Double drawn means thicker." It means more consistent length from root to tip. Density comes from gram weight and strand thickness, which are separate specifications.
4. "Brazilian hair comes from Brazil." In volume wholesale, usually not. This is not automatically a problem, but paying a Brazilian premium for Vietnamese hair is.
5. "Higher price means higher quality." Price tracks draw ratio, origin, and processing, in that order. A well-priced single drawn bundle from a careful factory outperforms an expensive mislabelled one.

The One-Page Specification to Send With Every Enquiry

Copy this into your next supplier email. Any factory that can answer all eight lines precisely is worth a sample order. Any factory that answers only the grade question is guessing.

1. Cuticle: aligned remy, or acid processed?
2. Draw: single or double, and what percentage reaches nominal length?
3. Chemical history: undyed, unbleached, or processed?
4. Origin and donor count: single donor or blended?
5. Weft: machine sewn, hand tied, or PU?
6. Weight tolerance: what is the actual gram weight of a 100g bundle, tie included?
7. Length measurement: from the top of the weft or from mid-bundle?
8. Sample policy: cost, courier, and lead time to my address?

We answer all eight on every quotation, because buyers who ask these questions are the ones who reorder. If you would like a sample bundle with the specification sheet attached, send us your requirement and we will quote against your target market rather than against a grade label.

Continue with this cluster: how cuticle alignment prevents tangling explains the mechanism behind the tangling complaint in more depth, machine weft vs hand tied weft covers the seam that determines shedding, and our length and weight chart covers why the same 100g bundle behaves differently at 14 and 26 inches.

Related reading: Double Drawn vs Single Drawn Hair: The Weight Test — how the draw ratio changes bundle density and where the 20-80% premium goes.