Both add length. Both add thickness. Both let you change your hair without cutting or colouring it. But they solve different problems, and the right choice usually comes down to three practical questions rather than which one looks better.
The short answer
Choose a wig if you want to change your hair completely, change it often, or cover your own hair entirely while it rests.
Choose extensions if you like your own hair and want more of it — more length, more thickness — with your real hairline and parting on show.
The three questions that actually decide it
1. How much of your own hair do you want visible?
This is the big one. Extensions blend into your natural hair, so your hairline, your parting and your own texture stay on show. Nothing to match, no lace to lay, nobody looking for a join — because the hair at the front genuinely is yours.
A wig covers everything. That's a disadvantage if you want your own hair seen, and a considerable advantage if you don't: you can wear a colour, length and texture that bears no relation to what's underneath.
Extensions also need enough of your own hair to blend with. If yours is very short, or thin at the front, a wig will look better.
2. How often do you want to change it?
A wig comes off at the end of the day. Straight on Monday, curly on Saturday, back to your own hair on Sunday. If you like changing your hair, nothing else comes close.
Extensions are installed and stay in — a good sew-in lasts six to eight weeks. That's convenient if you want to decide once and forget about it, and restrictive if you don't.
3. Who's installing it?
Plenty of wigs need no skill at all. A machine-made wig goes on like a hat. A closure wig with straps and combs can be worn glueless in five minutes. Frontals take practice, but you build it on your own time.
Extensions usually mean a stylist, at least for a sew-in. Clip-ins you can make up yourself, but a full install is a salon appointment with a salon cost attached — and that recurs every time you take them out and put them back.
What each actually costs
A wig is one purchase. Cared for properly it lasts across many wears, and the cost per wear falls every time you put it on.
Extensions look cheaper per bundle, but a full head is usually three bundles up to about 22 inches and four beyond that — plus installation, plus reinstallation every couple of months. Add it up over a year and the gap narrows considerably.
Protecting your own hair
Both do it, but not equally.
A wig covers everything. No heat, no colour, no daily manipulation, no tension on your edges. If you're growing hair out or recovering from bleach, that's as protective as it gets.
Extensions protect most of your hair while leaving a section out to blend at the front. That leave-out gets heat-styled and handled daily, so it takes the wear that the rest is being spared. Worth knowing if your hairline is the part you're trying to look after.
Washing and scalp care
With a wig, your scalp is accessible. Take it off, wash your own hair normally, wash the wig separately on a stand.
With extensions, you're washing around the tracks, and getting the scalp properly clean underneath takes more care. Build-up under a sew-in is the commonest complaint people have about them.
There's a middle option
Half wigs and V-part wigs sit between the two, and they're worth knowing about if neither of the above sounds right.
A V-part wig has a V-shaped opening at the crown. You pull a small section of your own hair through it and lay that over the join — so the parting is genuinely your scalp, with a full wig behind it. No lace, no glue, nothing to cut, and none of the installation cost of extensions.
A half wig works the same way with a section left out at the front. Both give you the blend of extensions with the on-and-off convenience of a wig.
One thing that applies to both
Whichever you choose, if it's textured hair, buy longer than you want to see. All lengths are measured stretched. Body wave loses an inch or two, deep wave loses a fifth to a quarter, and curly can lose half — a 20-inch curly piece may sit at 10 inches once it's dry.
That single point causes more disappointment than anything else in this category.
Still not sure?
If you're deciding between the two, or between two lengths within one of them, get in touch before you order. It's a short conversation and it saves a return.
