Double Drawn and End Fullness Explained: How Hair Extension Fullness Is Measured

Double Drawn describes a fuller length profile in which a high proportion of fibres reach or approach the target length and substantially shorter fibres are reduced. It does not by itself specify a fixed percentage of full-length hair.

For example, a possible 10-inch specification could contain approximately 85% hair in the 10–12-inch range and 15% in the 8–9-inch range. This is an illustrative composition, not a standard recipe or a promise for every Prime Human Hair product.

Agree a minimum fibre length, separate or assess the hair meeting that threshold using the agreed method, and compare its weight with total net hair weight.

For an illustrative 20-inch product, a buyer might define the threshold as 19 inches. If 35 g of a 100 g net-hair sample meets that threshold, the end-fullness result by this method is 35%. The attachments and packaging are not part of the denominator.

Agree the upper and lower positions on the bundle and use consistent bundling, compression and measurement conditions. Divide the lower circumference by the upper circumference.

For an illustrative 20-inch product, positions could be 19 inches and 3 inches from the top. If the lower circumference is 3.5 cm and the upper circumference is 10 cm, the circumference ratio is 35%. This does not establish that 35% of the hair weight reaches the length threshold.

A weight ratio describes qualifying hair mass. A circumference ratio describes the bundle thickness profile at agreed positions. The numbers are not interchangeable and cannot be converted directly without additional information.

Compare samples only after agreeing the same method, preparation, threshold or reference positions and sampling scope. A photo can communicate an intended appearance but cannot establish either measurement.

A fuller lower length can require more long fibres, but the appropriate result depends on the construction, usable length, colour, intended installation and client. Select the result that suits the product instead of treating the largest percentage as a universal quality score.

Review light colour and long length together with the intended fullness. The raw material and processing route must suit the finished product; confirm feasibility through sampling.

An example brief is: Genius Weft; target length 22 inches; net hair weight 100 g; defined material and physical shade reference; Double Drawn length profile; end fullness 50% by circumference ratio; upper and lower reference positions to be agreed; finished appearance subject to physical sample approval.

The numbers above are an example, not a default catalogue specification. Record the required attachment, selling unit, tolerances and measurement procedure before accepting the quotation.

Prepare a product specification · Compare quotations on the same basis