How to Install Deep Wave Bundles With Closure | Sew-In Steps

For the full breakdown, see our best Deep Wave Bundles guide.

Getting a salon-quality deep wave install at home comes down to three things: a stable foundation, the right order of attachment, and blending the closure so the wave pattern flows without a visible seam. Whether you are working with a sew-in or a quick-weave method, the sequence is what separates a bumpy, unnatural look from a fluid, professional finish. Below are the exact steps drawn from brand guides and experienced installers, with the common pitfalls called out so you can skip the trial-and-error.

Prep the Natural Hair and the Bundles

Wash your hair with a sulfate-free shampoo and a gentle conditioner, then let it air-dry completely — installing damp hair under a closure raises the risk of mildew and itching. Braid or cornrow the hair flat against the scalp. A bumpy base will telegraph through the closure, so take your time pressing each braid down snugly.

Lay out the bundles and closure. Check that the wave pattern on the closure matches the bundles — mismatched curl size is the most common reason the front looks disconnected from the rest.

Secure the Closure First

This is the order that matters most: the closure goes on before the bundles, not after. Place the closure over the braided top section, making sure the lace lies flat and the hair direction matches your natural growth pattern (usually forward or slightly to the side). Sew or glue the closure down tightly — a loose closure lifts at the hairline within hours and ruins the blend.

Install the Bundles From the Nape Upward

Once the closure is locked in, start sewing or gluing the bundles at the nape of the neck and work upward. Each track should sit slightly above the previous one, overlapping by about half an inch so no bare braid shows. Stop when you reach the closure area — the last bundle track should sit just below the closure’s edge, leaving a smooth transition zone.

Sew each track along the braid with a curved needle and strong thread, using a whip stitch or a blind stitch depending on your preference. For glue methods, apply a thin ribbon of adhesive along the braid and press the weft into it, holding for 10–15 seconds until it bonds.

Blend and Style the Closure With the Bundles

This step makes or breaks the natural look. After all bundles are installed, trim the closure’s lace close to the hairline — about a millimeter from the knots — so no lace edge peeks out. Part the closure hair where you want your natural part to fall, and use your fingers or a wide-tooth comb to coax the wave pattern into one continuous flow from closure to bundles.

Deep wave hair responds well to a lightweight curl-defining mousse or a water-based leave-in conditioner spritzed lightly over the whole head. Avoid heavy creams near the closure lace — buildup dulls the wave definition and makes the hair look greasy. Hot tools should be used sparingly and on low heat because the synthetic or blended fibers in some bundles can lose their wave pattern permanently under high temperatures. If you need to touch up the hairline quickly, a warm hot comb works, but the less heat the better for preserving the curl.