Double Weft Hair Extensions: Thick Ends Vs Single Drawn Explained
Double weft hair extensions are defined by density, not by the number of weft layers. The hair has been sorted more than once to remove short strands, so the ends stay nearly as thick as the top. This is the single most misunderstood term we deal with at the COOVIP HAIR factory. Buyers often assume it means two wefts sewn together. In professional hair-extension manufacturing, it describes how the hair bundle was drawn and graded before the weft was made.
Why does this matter? Two bundles can both weigh 100 grams and both be labeled 20 inches. One can look full to the very ends. The other can look thin and wispy from the mid-lengths down. The difference is the short-hair ratio inside the bundle. That is what double weft hair extensions with full, thick ends are designed to solve.
This guide explains the term clearly, shows how to test density before purchasing, compares single drawn and double drawn construction, and gives a fair side-by-side view of a factory supplier like COOVIP and a large salon brand. All of our hair is 100% real human hair, and our premium lines use raw hair. Density grading and hair source are two separate things, and we will keep them separate throughout.
What "Double Weft" Means And What It Does Not
Density Grading Versus Weft Construction
Two different things are often mixed together when people shop for wefts.
Density grading describes how the loose hair was sorted before wefting. "Single drawn" hair is sorted once. It contains a wide mix of lengths. "Double drawn" hair is sorted again, and a large share of the shorter strands are removed. This is the meaning behind a double weft in the extension trade.
Weft construction describes how the hair is attached to a seam. Machine weft, hand-tied, Genius Weft, and hybrid weft are all construction types. Any of them can be made from single drawn or double drawn hair.
So a Genius Weft can be double drawn. A machine weft can be single drawn. The seam type does not tell you how thick the ends will be.
| Term | What It Describes | What It Does Not Tell You |
|---|---|---|
| Double weft / double drawn | Hair sorted twice for length; fuller ends | Seam type, hair origin, processing level |
| Single drawn | Hair sorted once; mixed lengths in one bundle | Whether the hair is human or blended |
| Raw hair | Minimally processed human hair with intact cuticle | How thick the ends are |
| Genius / machine / hand-tied | How the hair is attached to the seam | Density grading of the hair on that seam |
There is no global standard that says exactly what percentage of strands must reach full length before hair can be called double drawn. Each factory sets its own grading tolerance. That is why we recommend testing the hair yourself rather than trusting the label alone.
Why 100 Grams Of Hair Can Look Like 70 Grams
Weight is measured at the top of the weft. Fullness is judged at the bottom. That gap explains most complaints about "thin" extensions.
Here is a simple illustration. Imagine a 100 g single drawn bundle labeled 20 inches. Suppose 30% of the strands are actually 12 to 16 inches long, 30% are 16 to 19 inches, and only 40% reach the full 20 inches. At the top, all 100 g is present. At 16 inches, roughly 70% of the strands remain. At 19 inches, closer to 40% remain. The last few inches carry less than half the hair you paid for.
Now imagine a double drawn bundle where shorter strands were removed in a second sorting pass. If 85% or more of the strands reach close to the stated length, the ends hold most of the original weight. The client sees a blunt, full perimeter instead of a taper.
These percentages are examples, not a universal specification. The exact ratio varies by factory and by batch. The principle does not change: the same gram weight can deliver very different visual density at the ends.
The Practical Consequence For Salons
Stylists sometimes compensate for thin ends by ordering extra packs. Adding 50 g of single drawn hair to fix wispy ends also adds 50 g of weight at the root. The client carries more weight but the ends may still look uneven, because the added bundle has the same taper.
Using full-density double drawn weft hair addresses the problem at the source. Density arrives where it is needed without increasing the total load on the foundation.
How To Check Density Before You Buy
Step 1: Compare Thickness At Three Points
Hold the weft flat and look at it from the side. Pinch the hair gently between your fingers at three positions: about 2 inches below the seam, at the midpoint, and about 2 inches above the ends.
On double drawn hair, the thickness at the third point should feel close to the first. On single drawn hair, the drop-off is obvious. Many stylists estimate that single drawn ends feel half as thick as the top, or thinner.
If you have a scale, you can go further. Cut a 1-inch strip from a sample weft, then trim it at the midpoint and weigh both halves. On a well-graded double drawn sample, the bottom half should be reasonably close to the top half. A large gap points to a high short-hair ratio.
Step 2: Estimate The Short-Hair Ratio
Comb a small section straight down over a ruler or tape measure. Look at where the strands end. If a clear cluster of strands stops 3 to 6 inches above the stated length, the bundle was not sorted tightly.
Do not rely on the ends being trimmed straight. A blunt cut on the very bottom can hide a thin taper above it. Check the density 3 inches up, not just at the last half inch.
Step 3: Confirm The Hair Source Separately
Density grading tells you nothing about processing. A double drawn bundle can still be heavily bleached, coated in silicone, or blended with non-human fiber.
Ask three direct questions before ordering:
a. Is the hair 100% human? Request confirmation in writing.
b. Is the cuticle intact and aligned? Aligned cuticles reduce tangling after the first few washes.
c. Is it raw or processed? Raw hair has had minimal chemical treatment and generally accepts professional color work more predictably.
At COOVIP HAIR, the answers are the basis of our product line. Our premium raw human hair double weft extensions combine tight length grading with minimally processed hair. Density and hair quality are checked as two separate steps in our factory, because a strong result needs both.
Single Drawn Vs Double Weft Vs Super Double Drawn
Some suppliers offer a third grade, often called super double drawn. It is sorted even more strictly and is usually the most expensive option per gram. The table below shows how the three grades compare in practice.
| Feature | Single Drawn | Double Weft / Double Drawn | Super Double Drawn |
|---|---|---|---|
| Sorting passes | One | Two | Two or more, tighter tolerance |
| End thickness vs top | Noticeable taper | Close to the top | Very close to the top |
| Natural look on blunt cuts | Often needs extra packs | Good | Best |
| Natural look on layered cuts | Acceptable | Good | Good |
| Cost per gram | Lowest | Mid | Highest |
| Grams needed for full ends | More | Fewer | Fewest |
Cost per gram and cost per result are different numbers. If single drawn hair requires 150 g to match the end density of 100 g of double drawn hair, the cheaper grade may cost more in total and put 50% more weight on the client's natural hair.
Which Clients Actually Need Thick Ends?
Not every client needs the highest grade. Matching the grade to the haircut and goal saves money and avoids over-building density where it is not wanted.
| Client Situation | Suggested Grade | Reason |
|---|---|---|
| Blunt or one-length haircut | Double drawn | Thin ends show immediately against a solid perimeter |
| Adding 6 inches or more of length | Double drawn | The new length is entirely extension hair, so ends must carry density |
| Naturally thick hair with fine ends | Double drawn | Balances the client's own taper |
| Heavily layered or shag cut | Single or double drawn | Layers hide a taper; either can work |
| Volume only, same length | Either, matched to natural ends | The extension ends blend with existing natural ends |
For the European and North American salon clients we mainly supply, long blunt cuts and soft, full ends remain the most requested finish. That is why double drawn grading is our standard for most weft lines rather than a premium add-on.
COOVIP Hair Vs A Large Salon Brand: A Density-Focused Comparison
Bellami is one of the most recognized names in the professional weft market, and many stylists first learn about double drawn hair from large brands like it. Brand recognition is useful. It is not the same as density data. The comparison below focuses on how a buyer should evaluate each supplier rather than on which name is more familiar.
| Evaluation Point | Large Salon Brand | COOVIP HAIR |
|---|---|---|
| Position in supply chain | Brand and distributor | Factory; hair is graded and wefted in-house |
| Density grading | Stated per collection; verify on sample | Double drawn standard on main weft lines; verify on sample |
| Hair material | Human hair; processing level varies by line | 100% human hair; raw hair on premium lines |
| Customization requests | Limited to catalog options | Length, weight, and grading can be discussed directly with the factory |
| Pricing structure | Includes brand and distribution margin | Factory-direct |
We do not claim our hair sheds less or lasts longer than any named competitor without a controlled test. What we do recommend is a simple salon-side comparison that anyone can run.
a. Order matching samples: same stated length, same weight, same color depth.
b. Weigh the ends: cut a 1-inch strip from each, split it at the midpoint, and weigh the bottom halves.
c. Wash both ten times: same shampoo, same water temperature, same drying method.
d. Record the results: note tangling, shedding by weight, and end thickness after the tenth wash.
This takes about two weeks and gives you data specific to your own salon. It is more reliable than any brand page, including ours.
Common Mistakes With Thick-End Wefts
Full density solves one problem. It can create others if the installation does not adapt.
a. Ordering by habit: a stylist used to 150 g of single drawn hair may order the same for double drawn and end up with more density than the client's natural hair can hide.
b. Skipping the perimeter cut: double drawn ends are blunt by design. Light point cutting keeps the finish believable on clients whose natural ends are softer.
c. Ignoring the client's own taper: if the natural hair thins sharply at the ends, the extension ends should be softened slightly to meet it.
d. Confusing thin seams with thin ends: a Genius Weft has a thin seam. That does not make the hair on it single drawn or double drawn. Check both.
e. Assuming label accuracy: grading tolerance differs by factory. Run the three-point thickness check on every new supplier.
Keeping Double Weft Ends Full Over Time
Density at purchase is the starting point. Ends stay full only if the hair is protected from mechanical and chemical damage.
Heat: keep styling tools at or below 350°F (about 180°C) on raw hair unless a specific service requires more. Always use a heat protectant.
Brushing: start at the ends and work upward with a loop brush or wide-tooth comb. Brushing from the top down drags knots into the ends and breaks strands.
Washing: use sulfate-free shampoo, condition from mid-length to ends, and dry the weft seam fully. Damp seams left overnight are a common cause of odor and weakened stitching.
Color: raw hair can be lightened, but every level of lift removes some structural strength. Toning and depositing color are lower risk than repeated bleaching. Strand-test first.
Sleeping: a loose braid and a silk or satin pillowcase reduce friction, which is the main cause of split and thinning ends between appointments.
Frequently Asked Questions
Does Double Weft Mean Two Wefts Sewn Together?
Q: Is a double weft physically two layers?
A: In professional extension manufacturing, no. The term refers to double drawn hair, meaning the bundle was sorted twice to remove short strands. Some retail sellers use the phrase loosely for stacked wefts, so ask the supplier which meaning applies before ordering.
Is Double Drawn Hair Heavier?
Q: Will 100 g of double drawn hair weigh more on my head than 100 g of single drawn?
A: No. 100 g is 100 g. The difference is where that weight sits along the strand. Double drawn hair keeps more of the weight at the ends, so it looks fuller without adding load at the root.
Is Raw Hair The Same As Double Drawn?
Q: If hair is raw, is it automatically thick to the ends?
A: No. Raw describes processing, not grading. Raw hair can be single drawn. Double drawn hair can be heavily processed. The best option for long, blunt results is raw hair that has also been double drawn.
Why Is Double Drawn Hair More Expensive Per Gram?
Q: What justifies the higher price?
A: More raw material is needed. Removing short strands means a larger volume of original hair is required to produce the same finished weight at the stated length. Labor for the second sorting pass also adds cost.
Can I Cut Double Weft Hair To Fit A Row?
Q: Does the density grade affect whether I can cut the weft?
A: No. Cutting depends on the seam construction, not on the grading. A double drawn Genius Weft or machine weft can usually be cut. A double drawn hand-tied weft usually cannot. Check the construction, not the density label.
How Do I Know If A Supplier's "Double Drawn" Claim Is Accurate?
Q: Is there a quick test?
A: Pinch the hair 2 inches below the seam and 2 inches above the ends. If the lower pinch feels close to the upper one, the grading is tight. If it feels half as thick or less, the bundle contains many short strands regardless of the label.
The Bottom Line On Double Weft Hair Extensions
A double weft is a density grade, not a seam type. It exists so the ends of the extension carry nearly the same amount of hair as the top. For blunt cuts, long transformations, and any client who wants a full perimeter, that grading usually matters more than the gram number on the box.
When comparing suppliers, separate the three questions. Is the hair double drawn? Is the hair raw or processed? What construction is the seam? A strong product answers all three clearly, and a good buyer tests the first one by hand rather than trusting the label.
At COOVIP HAIR, density grading and raw hair sourcing are both handled inside our own factory. That gives us control over the short-hair ratio in every bundle and over the processing history of the hair on every seam. It is also why we encourage salons to sample and measure before committing to volume orders.
For your next long or blunt-cut client, compare COOVIP double weft hair extensions in raw human hair using the three-point thickness test in this guide. If the ends hold up under that check, the rest of the installation becomes much simpler.
