The Most Invisible Hair Extensions We Sell

If you've ever worried about extensions showing through fine hair, or catching under a ponytail, this is the method built to solve that. Genius Wefts are the thinnest, finest hair extensions we offer, and they lie so flat against the scalp that they're widely considered the most undetectable option on the market. We've just upgraded our range from just 22" to three new lengths and fifteen shades, so it felt like the right time to properly introduce them.

What makes Genius Wefts different

Most weft methods sit slightly raised from the scalp. Genius Wefts don't. The construction is finer and flatter than anything else in our range, which means less bulk at the root and a blend that's nearly impossible to spot, even up close. If invisibility is the priority - not just at length, but at the scalp - this is the method built for exactly that.

 

They're also easier to colour blend than most methods. Two or three shades can be applied together to create a more natural, multi-tonal finish, which is part of why colourists reach for them when a client wants real dimension rather than one flat tone.

Genius Wefts vs Butterfly Wefts

We get asked this a lot, and the honest answer is there's no single right choice. Both are excellent, and a lot comes down to your stylist and your priorities.

 

Genius Wefts are actually the more widely used of the two, even though they're the trickier method to apply. Most extension specialists are trained in the technique, so it's often the one your stylist already knows best, and it does need an expert hand rather than a DIY job.

 

Butterfly Wefts are the easier of the two to fit, simple enough that some people manage them at home. They're brilliant for most people, flat, comfortable, and reusable.

 

Where Genius Wefts pull ahead is invisibility. If you have thicker natural hair and you're chasing length that genuinely disappears into it, Genius Wefts are usually the better call. Their finer, flatter build means they stay hidden even under hair that would otherwise make a weft harder to conceal.

 

Thin or fine hair works beautifully with either method. From there, it's really a question of what your stylist is most confident applying and what finish you're after.

How long do Genius Wefts last between reapplications

Like most semi-permanent methods, this comes down to how fast your natural hair grows, but most people are back in with their stylist around the four week mark. Your stylist will be able to give you a more exact timeline based on your regrowth

New stock: Widths, shades and lengths

This delivery is a committed expansion of the range. Genius Wefts are landing in three widths, 16", 20" and 24", (previously just 22") width we've carried previously. Alongside that, we've brought in fifteen shades across the full length range, giving stylists far more room to colour match and blend.

 

If you've looked at Genius Wefts before and couldn't quite find your shade or width, this restock is worth a second look.

Have a chat with your stylist

Genius Wefts are a professional installation, so the best next step is chatting with your stylist about whether they're the right fit for your hair and your goals. Explore Medusa's Genius Weft range across all three widths and fifteen shades.
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