For stylists & salons
Extensions by stylists, for stylists.
Double-drawn, cuticle-intact hair from level 1 to icy blonde, hands-on certification, and Pro pricing built to keep your extension services profitable.
Not a stylist? Find a 43 One certified stylist →
How Pro pricing works
Shoppers see suggested retail. Approved stylists log in and shop at 40% off, so your clients see a price that backs up yours.
1
Sign up
Create a free Pro account as a stylist or cosmetology student.
2
Get approved
We approve accounts within 24 hours, and usually much sooner.
3
Shop at Pro pricing
Log in and every product shows your 40% Pro price automatically.
Shop by method
Genius Wefts
Ultra-thin and flat like a hand-tied weft, but cuttable on the seam with no return hair. Stack them to blend colors. Lasts 9–12 months.
Flex Wefts
Machine weft built for volume. Easy to sew in, cuttable on the seam, lays close to the scalp. Lasts 9–12 months.
Tape-Ins
Gentle and flat to the head. Best for filling in, or 3–5 packs for a full head. Re-tape and reuse. Lasts up to 6 months.
K-Tips
Individual keratin bonds for natural movement and custom placement, even around the sides. Lasts 3–5 months with no move-ups.
Clip-InsAnyone
No install needed. Open to everyone.
Tools & Supplies
Replacement tabs, micro beads, thread, gloves, foils and bags.
Shades, described in levels
Named for the places we love, described the way you'd formulate them. Not sure which one? Grab a swatch ring or send us a photo and we'll color-match it.
Dark & Brunette
Reds
Blonde
Rooted
How much hair do I need?
Estimates for quoting your client, not hard rules. Longer lengths and thick or blunt natural hair may need more for a seamless blend, and only add what their natural hair can comfortably support.
Genius Wefts: 22", 24" · 100g and 50g packs
Flex Wefts: 22", 24" · 145g and 70g packs
K-Tips: 20 strands per pack
Tape-Ins: 16"–22" · 10 pieces (5 sandwiches) per pack
| Goal | Genius Wefts | Flex Wefts | K-Tips | Tape-Ins |
|---|---|---|---|---|
| Volume only | 50–100gone 50g or 100g pack | 70gone 70g pack | 1–3 packs20–60 strands | 1–2 packsto fill in |
| Length + volume | 100–150g100g pack, plus 50g if needed | 140–145gtwo 70g or one 145g | 4–6 packs80–120 strands | 3–5 packsfor a full head |
| Full transformation | 150–200g+100g + 50g, or two 100g | 210–215g+three 70g, or 145g + 70g | 6–8+ packs120–160+ strands |
Get 43 One certified
Learn our install method in person or online, at your own pace.
In person · Next class
Extension Certification
Sunday, November 22, 2026 · Birmingham, AL
$900 · 8 seats left
Save your seatOnline · Start anytime
Sew-In Course 101
Hand-tied and machine wefts, at your own pace.
$800
View courseWant us to teach at your salon? Request a salon class →
Salon owners
Make extensions a profit center
See what wholesale hair adds to your salon's year with our profit calculator, then grab a Starter Kit to get your team going.
Looking for extensions?
Find a 43 One certified stylist
Extensions look their best installed by a pro. Your stylist will match your shade and plan the right amount of hair.
Ask us for a recommendationQuestions
How do I get Pro pricing?
Create a free Pro account as a stylist or cosmetology student. We approve accounts within 24 hours, and usually much sooner. Once you're approved, log in and you'll see your Pro price on every product.
How does shipping work?
Free on US orders over $50. Orders ship within 1–2 business days and usually arrive in 3–5. Smaller orders ship at a rate calculated at checkout.
What kind of hair is it?
Double-drawn, cuticle-intact human Remy hair. With proper care, wefts last 9–12 months, tape-ins up to 6 months, and K-tips 3–5 months.
Can I return or exchange hair?
Unopened hair can be exchanged within 30 days of purchase.
Do your tape-ins contain latex?
Yes, the tape adhesive contains latex. Check with your client before installing.
Do you teach certification in my city?
We'd love to bring our method to your salon. Contact us to set up a class.