Four adhesive types attach hair: pressure-sensitive tape, keratin polymer, bonding glue and liquid weft adhesive. They cure differently, fail differently and need different solvents. We make the first one, and only the first one.
Adhesive is the word doing the most work in this category, and it covers four chemistries that have almost nothing in common beyond the outcome. Knowing which one you're dealing with settles what holds it, what removes it, and what goes wrong.
We make one of the four. The other three are named here rather than left vague.
The four chemistries
| Type | How it holds | How it fails | Removed by |
|---|---|---|---|
| Pressure-sensitive tape | Contact, not curing. Pressure makes the bond | Oil at the edges, heat, tension | A matched tape solvent |
| Keratin polymer | Melted around the strand and set | Brittleness, and heat during styling | A crimping plier plus a keratin breaker |
| Bonding glue | A flexible waterproof film on skin or weft | Sweat, oil and time | A dedicated lace or bonding solvent |
| Liquid weft adhesive | Cures into a flexible seam along a track | Peeling at the edges, water ingress | Its own solvent, usually citrus or alcohol |
Row one is ours. We don't make, sell or recommend a specific product for the other three.
Why pressure-sensitive is different
The other three cure. Something changes state and sets, whether by heat, by evaporation or by chemical reaction. Pressure-sensitive adhesive doesn't. It is tacky in the packet, tacky on the weft and tacky at removal, and what makes it hold is contact area plus pressure.
That has two consequences worth knowing. It bonds once, because the surface picks up hair and dust the moment it is peeled, so a tab cannot be re-used. And it can be un-bonded without destroying anything, which is why tape-in removal is a minute a tab rather than an afternoon.
What breaks a pressure-sensitive bond
- Oil. It gets between the adhesive and the hair at the edge of the tab and works inward. Hair oil, conditioner and oily serums all do it.
- Heat, applied directly to the tab. Softened adhesive slides rather than holds.
- Water in the first 24 hours, before the bond has settled against the hair.
- Tension from a panel carrying more weight than the section can take.
- Solvent, doing evenly and on purpose what oil does slowly and unevenly.
Four of those five are also aftercare instructions, which is why aftercare in this category is short and specific rather than general beauty advice.
Choosing between the types
Tape holds flat against the head, moves quickly at a move-up, and involves no heat. Keratin survives more abuse and takes longer to remove. Bonding glue is for wigs and lace and isn't comparable. Liquid adhesive suits weft and track work.
None of that makes tape the right answer for everyone, and it is often not. Very fine hair, very short hair and hair that's mid-recovery from chemical damage are all cases where the honest advice is to talk to a stylist about whether extensions at all, rather than which adhesive.
The three we don't do
No keratin tips, no keratin breaker, no crimping plier. That is a different trade and we don't stock it.
No bonding or lace glue. A wig adhesive has to survive skin, sweat and weeks of wear, and ours isn't built for skin contact at all.
No liquid weft adhesive. We make pre-cut tabs, and a tab is the wrong shape for a continuous track seam.
What we sell for this
Close to this question
- Waterproof hair adhesive. Corrects the waterproofing question by separating water from oil, heat and the 24-hour set window.
- Hair glue remover. Separates the three adhesive classes people call glue, and says which one we serve.
- Tape for extensions. The head-term explainer: how tab packs are counted and specified, and why hold and release are a single decision.
- Double-sided adhesive tape for hair extensions. Explains the sandwich mechanism itself, including section thickness and what tension does to the root.
Questions we get asked
What adhesive is used for tape-in extensions?
A pressure-sensitive adhesive on a pre-cut double-sided tab. It bonds by contact and pressure rather than by curing, which is why removal is a solvent job rather than a heat one.
Is extension adhesive safe on the scalp?
A tape-in tab is meant to sit on hair, slightly off the scalp, not against skin. Any soreness at the bond line is a stop signal and a stylist question.
Can I use one adhesive for every method?
No. They are four different chemistries with four different failure modes, and each needs its own solvent to come out.
Why does adhesive fail early?
Almost always oil reaching the bond, or a panel carrying more weight than the section can hold. Both are more common than defective tape.