If your hairpin keeps slipping out, the problem is almost never the pin itself.
I hear some version of this frustration constantly: "I've tried hairpins and they just don't stay in my hair." When I watch someone demonstrate how they're pinning, the issue usually becomes obvious within about ten seconds. The pin is going in the wrong place, at the wrong angle, or it's been opened too wide before it goes in.
None of those things are hard to fix. But you have to know what you're looking for.
Here are the most common reasons a hairpin falls out, and what to do about each one.
The pin is going in too flat
A pin inserted parallel to the scalp, or nearly so, has very little to anchor against. It slides in, touches the hair, and eventually works its way out because it was never truly seated in the first place.
The fix: angle the pin slightly downward as it enters, toward the scalp rather than away from it. That angle is what lets the pin catch the hair beneath the style and seat itself against the head. It feels like a small adjustment, but it changes everything about how the pin holds.
You're not weaving through
This is the step most people skip, and it's the most important one.
A hairpin isn't meant to be pushed straight through a section of hair like a needle. It should weave: go in, catch a small amount of hair near the scalp, then come back through the style. That motion creates a locking mechanism. The pin is crossing over a small anchor of hair rather than floating through the style.
When people push a pin straight through without the weave, it sits in the hair but isn't actually gripping anything. One good head shake and it's gone.
The pin is opened too wide on the way in
A lot of people spread the prongs of the hairpin apart before inserting it, thinking it will be easier to get through the hair that way. What actually happens is the opposite. Spreading the prongs reduces the tension between them, which reduces the grip. A pin with close prongs grips more firmly because there's more internal pressure working to keep the hair in place.
Keep the prongs close together as the pin goes in. Let the pin do the work of passing through the hair rather than forcing it through an opening.
The pin isn't reaching the anchor point
Every style has a structural point, usually near the scalp, where the tension is highest and the hold is most secure. That is where the pin needs to land.
For a bun, that point is the base, where the coiled or twisted hair meets the head. For a half-up style, it's where the gathered section sits closest to the scalp. Placing the pin at the outer surface of the style rather than at this structural center is one of the most common reasons a pin looks placed but doesn't hold.
If your pin feels like it's sitting on top of the style rather than inside it, it's not deep enough.
The bun itself isn't built to hold
A pin can only do so much if the style underneath it isn't structured. A very loose or already-collapsing bun before the pin goes in will be a very loose or collapsing bun after. The pin anchors what's there. It can't create structure that doesn't exist.
Before pinning, gather the hair with some actual tension, coil or fold it into the shape you want, and give the bun a moment to settle before reaching for the pin. A bun with internal structure holds. A bun that's just loosely piled together won't, regardless of how many pins you use.
You're using the wrong pin for your hair
Pin size matters more than most people realize. A pin that's too short for a dense or heavy bun will never reach the anchor point at the base. A pin that's too large for a small amount of fine hair won't seat properly either.
For thick, long, or heavy hair: the Power Pin is built long enough to pass through a full, dense bun and strong enough to hold the weight without bending or slipping.
For fine to medium hair or smaller styles: the Petite Power Pin gives structural hold scaled to the amount of hair you're actually working with.
For complex updos where you need interior structure before the finishing pins go in: Foundation Pins are what professional stylists use to build the invisible architecture that makes a style hold all day.
If you go through this list and address whichever step you're missing, the pin should hold. The technique is learnable, and once it clicks, it stays with you.
For a full walkthrough from the beginning, the Complete Guide to Hairpins covers everything: angle, weave, placement, and how to choose the right pin for your hair type. And if you want to see the technique applied to a specific style, How to Use a Hairpin: A Celebrity Stylist's Guide is the place to start.
xo, Aviva
