19" Wavy Invisible Extension by Hairdo

19" Wavy Invisible Extension by Hairdo

Instant length. Instant waves. Zero clips, zero commitment, and zero one-hour styling sessions. The 19" Wavy Invisible Extension by Hairdo is HairUWear's bestselling halo-style extension — a single wefted hairpiece on an invisible wire that slips on like a headband, sits ½" behind your front hairline, and disappears the moment you pull your own hair over it. At 4.9 oz of Tru2Life® heat-friendly synthetic fiber in a pre-set soft wave that can be worn as-is, enhanced with a curling wand, or smoothed straight with a flat iron, the 19" Wavy Invisible Extension is the fastest, easiest, most natural-looking way to add 19" of length and volume to your look — in under a minute, every time. From Hairdo by HairUWear.

At a Glance

Not sure which Hairdo extension is right for you? Use the Face Shape Analyzer to find your most flattering styles — then preview your look with the MyHairMagic virtual try-on app. The only premium wig and topper try-on app of its kind.

How the Invisible Wire Works — The Entire Process

The Invisible Extension uses a simple halo-style application that requires no clips, no adhesive, no braiding, and no outside help. The entire process takes under a minute once you have done it once or twice.

Step 1: Hold the extension by the wire and position it on your head like a headband — the wire sits approximately ½" behind your natural front hairline across the crown of your head. The color-matched wire is barely visible even before it is concealed.

Step 2: Pull your own front hair forward over the wire to conceal it. Use your fingers or a wide-tooth comb to blend your natural hair with the extension weft — the extension falls beneath your own hair, creating a seamless transition at the hairline.

Step 3: Style as desired. The pre-set waves are ready to wear as-is. Heat tools can enhance the wave, add curl, or smooth the extension straight if a different look is desired.

The result is 19" of wavy length and volume that reads as your own hair — not a hairpiece, not an extension, not an add-on, but simply your hair, longer and fuller than it was five minutes ago. The confirmed HairUWear description is accurate: "the ingenious and inconspicuous design blends in seamlessly."

The 19" Wavy Pre-Set: Three Presentations

Wear the Waves — The Effortless Default

The pre-set wavy texture is factory-set in the Tru2Life® fiber and ready from the moment the extension is out of the box. No styling required. The waves fall naturally at 19" of length — soft, dimensional, and naturally textured in the specific way of hair that waves rather than being curled. For most wearers on most days, the wave is complete and attractive as-is. Apply, blend, go.

Enhance the Waves or Add Curls

A curling wand at the optimal Tru2Life® range of 275°F–300°F defines and amplifies the pre-set waves or adds fresh curls throughout the 19" length. The confirmed HairUWear technique: wrap a 1-inch section around the curling iron, hold for 10 seconds, carefully slide the iron out, and hold the curl shape with a hairpin or clip until completely cool to set the curl. Apply heat protectant (HairUWear PROTECT silicone spray or equivalent) before every heat styling session.

Wear It Straight — A Completely Different Look

A flat iron at 275°F–300°F smooths the pre-set waves into a sleek, straight 19" extension — the same length and volume in the cleanest, most polished presentation. The confirmed HairUWear technique: take a 1-inch section and run a flat iron from the base to the ends. Allow to cool. Any heat-set configuration locks in until washed. The pre-set wavy texture returns after washing and air-drying.

Tru2Life® Fiber: Heat-Friendly and Natural-Feeling

Tru2Life® is HairUWear's exclusive heat-friendly synthetic fiber — confirmed as "light, soft and lustrous without being shiny" and described as neither externally nor tactilely distinguishable from real hair by buyers who use it regularly. The fiber can be curled, waved, flat-ironed, or blown dry up to 350°F with an optimal everyday range of 275°F–300°F for best results. Do not heat-style while wearing — Tru2Life® fiber gets hot during heat styling and should be styled on a wig stand or mannequin head before wearing. Use heat protectant before every session.

Important note: once a Tru2Life® curly or wavy style is heat-straightened, it does not return to its original texture after washing — the fiber retains the heat-styled configuration until the next heat styling session. If the pre-set waves are straightened, restoring them requires a curling wand pass after washing.

Washing and Care

Gently remove tangles with fingers or a wide-tooth comb before washing — start at the ends and work toward the base. Do not brush. Do not overstretch or pull on the fiber. Add a small amount of wig shampoo to a basin of cool water. Place the extension in the basin and allow to soak for 3–5 minutes. Gently swish — do not rub. Rinse thoroughly with cool water. Gently press out water with a towel — do not wring or twist. Air dry on a wig stand or lay flat to dry. Once completely dry, the pre-set wavy texture returns automatically.

Available Colors

The 19" Wavy Invisible Extension by Hairdo is available in Hairdo's color range — the same R-color system used across the HairUWear brand family. Colors include warm brunettes, rich auburns, dimensional blondes, highlighted blends, and grey/silver options. Each color is formulated to match natural hair tones for the most seamless blend between the extension and the wearer's own hair.

Matching color is the most critical purchase decision for an invisible wire extension — the blend between the extension and your natural hair at the point of overlap determines how natural the result looks. Ask Angela℠ for personalized color matching guidance before ordering, particularly if your natural hair has highlights, lowlights, or grey blending that a single uniform color may not fully replicate.

Who the 19" Wavy Invisible Extension Is For

You want instant length and volume without commitment, clips, or technique. The halo-style invisible wire application requires no special skill, no clips, and no help — slip it on, pull your hair over the wire, blend. The entire application takes under a minute. For buyers who want a long, wavy look on demand without a salon visit or a permanent change, the Invisible Extension is the specific, immediate answer.

You are growing your hair out and want length right now. The 19" extension adds 19" of wavy length to whatever your current hair length is — providing the long, flowing look during the grow-out period without any waiting, any cutting, or any commitment. Remove it for the day it is not needed. Wear it for the day it is.

You have thinning hair or diffuse hair loss and want added volume at the crown. The halo-style wire sits at the crown — the area where thinning is most visible and most distressing. At 4.9 oz of Tru2Life® fiber, the extension adds volume and length at the crown in a way that is immediately visible from every angle. The color-matched wire and the coverage provided by pulling your own hair over it ensure the extension sits invisibly — the result reads as your own hair, fuller and longer, rather than as an obviously-attached hairpiece.

You want to try a long wavy look before committing to a wig. The Invisible Extension is the lowest-commitment way to experience a long, wavy hair character — wear it, see how it looks and feels, decide whether a wig or topper is the next step. Remove it at any time. No adhesive, no alterations, no permanence.

Frequently Asked Questions

Do I need clips for this extension?
No — the 19" Wavy Invisible Extension by Hairdo uses only the invisible wire for application. No clips required. The wire sits on the crown, your own hair is pulled over it to conceal it, and the weight of your hair holds the extension in place throughout the day.

How much of my own hair do I need to use this extension?
Enough to pull over the wire to conceal it — approximately 1"–2" of your own front hair is sufficient to cover the wire at the hairline. Buyers with very minimal front hair or alopecia at the front hairline may find the wire more difficult to conceal. Ask Angela℠ for guidance on whether the Invisible Extension or a topper would better serve your specific situation.

Is Tru2Life® heat-friendly?
Yes — up to 350°F, optimal 275°F–300°F. The pre-set wavy texture can be enhanced with a curling wand, smoothed with a flat iron, or left as-is. Never heat-style while wearing — style on a wig stand or mannequin head before application. Always use heat protectant.

Will the waves return after washing?
Yes — as long as the extension has not been heat-straightened. If the wavy texture is smoothed flat with a flat iron, it will remain straight after washing until you re-wave with a curling wand. The factory-set wavy texture returns automatically only if it has not been overridden by flat iron heat.

How do I match the color to my own hair?
Ask Angela℠ before ordering — color matching is the most important step for an invisible wire extension and the most difficult to do from a screen alone. If your hair has multiple tones, highlights, or grey blending, Angela℠ can help identify the color that blends most naturally with your specific hair.

Explore the full Hairdo Extensions Collection at MyHairMail.com.