For salon owners, wig makers, and wholesale hair buyers, selecting the right hair grade can feel like navigating a maze. Every factory claims their extensions are “100% full,” yet the thickness at the ends varies wildly from one shipment to another.

If you are sourcing hair for your brand, or simply trying to get the most volume for your next install, you have likely come across the debate: super double drawn hair vs double drawn hair.

What do these grades actually mean? Why does a “Double Drawn” bundle from one supplier look as thin as a “Single Drawn” bundle from another?

In this ultimate guide, we reveal the industry secrets behind these grading systems, compare their performance, and teach you how to source hair like a seasoned pro.

Table of Contents

What is Super Double Drawn Hair?

To understand what does super double drawn hair mean, we have to look past the marketing terms and calculate the actual ratio of full-length hair strands inside a bundle.

Super double drawn (SDD) hair is the thickest and highest-grade hair extension available in the hair market. In a genuine super double drawn bundle, approximately 80% to 95% of the hair strands are of the exact same length.

During manufacturing, factory workers manually comb through the raw hair multiple times to pull out almost all the shorter hair strands. The result is a bundle that maintains a uniform, blocky thickness from the top weft all the way to the tips. It provides a luxurious, heavy look that requires no trimming to look full.

Double Drawn vs. Super Double Drawn: The Comparison

While both grades are designed to offer a full-bodied look, they differ significantly in their construction, wearability, and target styling.

Feature	Double Drawn (DD) Hair	Super Double Drawn (SDD) Hair
Longest Hair Ratio	50% – 80% (varies by factory).	80% – 95% (varies by factory).
End Appearance	Thick, but has a slight natural taper.	Extremely thick, blunt, and blocky.
Scalp Weight & Tension	Moderate; comfortable for daily wear.	Heavy; puts more tension on the scalp.
Friction Tangling (Neck/Shoulder)	Low; tapered ends reduce rubbing.	Moderate; blunt ends rub and tangle in humidity.
Bundles Needed for Full Wig (14″)	3 bundles + 1 closure.	2 bundles + 1 closure.
Dyeing & Bleaching Quality	High (if sourced from raw donor hair).	Extremely High (processed manually to remove weak hairs).
Price Point	Moderate.	Premium/Luxury.

The Length Paradox: Why Ratios Aren’t Everything

Before ordering, you must keep in mind that these percentage ratios are guidelines. Hair length significantly alters how these grades behave:

For Long Hair (24″ – 30″+): Sourcing raw human hair that is 30 inches long is extremely rare. Therefore, achieving a true 80% to 95% full-length ratio (Super Double Drawn) at these lengths is nearly impossible. Even the highest-quality long bundles will naturally have some taper at the ends.

For Short Hair (6″ – 8″): Because the difference between the longest and shortest strands in a short bundle is only a few inches, even a single drawn short bundle will look naturally thick, full, and blunt from root to tip, closely mimicking the appearance of double or super double drawn hair.

The Sourcing Trap: Beware of “Grading Inflation”

One of the biggest secrets in the global hair industry is that there is no universal standard for “Double Drawn” or “Super Double Drawn.”

Ratios differ drastically between B2B manufacturers and local B2C retailers (especially in major markets like Lagos, Nigeria). Here is how the exact same terms are defined across the supply chain:

Premium Vietnamese Factories (e.g., Lyn Hair): Maintain strict, transparent standards. Single Drawn is 50-60%, Double Drawn is 70-80%, and Super Double Drawn is 80-95% full-length hair.

Lower-End Factories: To lower their prices, they inflate their grades. Their “Double Drawn” bundles often contain only 50% full-length hair, and their “Super Double Drawn” contains only 80% (which matches a premium factory’s Double Drawn).

Local African/Western Retailers: Due to local market pricing, many retailers label a 50% full-length bundle as “Double Drawn” and an 80% full-length bundle as “Super Double Drawn.”

💡 Wholesaler Pro-Tip: Never order hair extensions based on names like “Double Drawn” or “12A.” Always ask the supplier directly: “What is the exact Longest Hair Ratio (percentage of full-length strands) in this bundle?” A trustworthy factory will always give you a direct percentage.

Pros and Cons: Weight, Realism, and Styling

Single & Double Drawn: The Natural Look

Pros: Double drawn hair has a softer, slightly tapered finish that mimics how natural hair grows from the human scalp. It looks highly realistic and puts less stress on your natural hair.

Cons: You need more bundles (typically 3 bundles) to make a full wig because the ends are thinner.

Super Double Drawn: The Ultimate Glamour

Pros: SDD is the holy grail for super double drawn straight hair (especially bone-straight styles). The ends stay thick and blunt without looking stringy. You can get away with using only 2 bundles for a full head because the hair is so dense.

Cons (Follicle Strain & Frizzing): Because SDD bundles are heavy, they can cause pressure on weak hair follicles, which can lead to hair shedding or scalp tension if worn in very long lengths (28″ to 30″). Additionally, the blunt, dense ends of SDD rub against your shoulders and neck, making them more prone to friction-based tangles in humid weather.

Source Transparent Vietnamese Super Double Drawn Hair from Lyn Hair

If you want to avoid inflated grades and protect your salon’s reputation, sourcing directly from a transparent Vietnamese manufacturer is the best strategy.

Vietnamese super double drawn hair is globally renowned because Vietnamese hair is naturally thick, strong, and sleek, allowing it to maintain its structure even when combed out to an 80-95% ratio.

Lyn Hair is one of Vietnam’s top hair factories, providing authentic, factory-direct human hair extensions.

Honest, Declared Ratios: We never inflate our grades. When you buy Lyn Hair’s Double Drawn, you get a true 70-80% ratio. Our Super Double Drawn is guaranteed at 80-95% fullness.

100% Cuticle-Aligned Raw Hair: Hand-selected from healthy donors, our hair holds bleach beautifully and retains its silky softness for over 2 to 3 years.

Wholesale Factory Pricing: Access direct-from-factory prices without middleman markup.

Scale your hair business today with a partner you can trust. Contact Lyn Hair on WhatsApp for custom orders, catalogs, and sample bundles:

💬 WhatsApp / Hotline: +84 936 085 069

SUPER DOUBLE DRAWN HAIR VS DOUBLE DRAWN HAIR: WHAT IS THE DIFFERENCE?