
Ginseng Root Extract
Nourishes the roots, easing dryness and fragility.
Repair + straighten
20 treatments per box · results last 4–8 weeks
Most masks make you choose: repair your hair, or smooth and straighten it. Rebuild by Mend&Co does both in one rinse-out treatment — hydrolyzed keratin, collagen and Acetyl Hexapeptide-8 rebuild damaged strands while relaxing frizz for a visibly straighter, glassier finish.
Real reviews from real Menders.
Magical product, I loved the result. My hair was super damaged and when I used this product, my hair came back to life.
I was skeptical. The final result impressed me! I have dry, damaged hair, which is also extremely fine. After blow-drying, my hair became shiny, soft, full of life, easy to style, and smells really good. I'm quite sure I will order again.
I put it on the first time and it helped me. I will continue using it.
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It arrived in perfect condition and met my expectations. I recommend them 100%.
Complete packaging - very satisfied

Triple-action repair
One rinse-out treatment that hydrates, smooths and rebuilds damaged hair from the inside out.
Deeply penetrates to hydrate, lifting dryness and dullness.
Smooths and relaxes frizz for a visibly straighter, silky finish.
Fills the gaps in damaged hair, reducing breakage and fragility.
The 30-day journey
Used 2–3 times a week, here's how hair tends to look and feel as you move through your first box.

Day 01
First treatment
One rinse-out and hair already feels softer, smoother and easier to manage. Frizz visibly calmer.

Day 07
2–3 treatments in
Strands feel stronger and the comb glides — less snagging, with a healthier natural shine starting to show.

Day 13
Halfway
Smoothing builds. Hair falls straighter and styles faster, with less heat needed.

Day 30
Full box
Repaired, sleek, healthy-looking hair — the look you keep up with ongoing use.
Illustrative of a typical usage journey. Individual results vary with hair type and routine.
The repair core
No needles, no toxins — just a targeted complex that rebuilds damaged hair from the core out.
Strengthens the hair's structure, reducing breakage and split ends.
Fills hair gaps and rebuilds the strand's protein network.
Boosts hair resilience and nourishes against future damage.
Botanical actives
A short list of proven actives — chosen to nourish, smooth and protect, with nothing along for the ride.

Nourishes the roots, easing dryness and fragility.

Smooths and adds shine, reducing frizz and tangles.

Gently conditions, improving hair flexibility.
One treatment. Visibly smoother, healthier-looking hair.
Why Rebuild
Salon keratin straightens but damages. Ordinary masks repair but don't straighten. Rebuild does both — in one rinse-out treatment.
FAQ
No needles, no toxins. Hair Botox is the beauty world's nickname for an intensive repair mask — ours is a keratin, collagen and peptide treatment that fills in the damaged spots along each strand. Nothing is injected and nothing freezes; the name just describes the smooth, plumped result.
After shampooing, towel-dry until your hair stops dripping. Work a generous amount through the mid-lengths to the ends — skip the scalp. Leave it on for 5 to 20 minutes, then rinse thoroughly. One sachet is sized for a single treatment.
Two to three times a week while you're repairing damage, then drop back to once a week to maintain. Most Menders feel the difference from the very first wash.
Twenty. Each box holds 20 single-use 10g sachets — one sachet per treatment — so a single box keeps you going for weeks.
No. Unlike the salon keratin and botox smoothing treatments you may have heard about, ours is a simple rinse-out mask — there's no formaldehyde, no flat-iron sealing and no harsh fumes. You're nourishing your hair, not chemically altering it.
A repair complex of hydrolyzed keratin, collagen and Acetyl Hexapeptide-8, plus biotin, camellia seed oil, ginseng root extract and lactic acid — chosen to rebuild damaged strands, lock in moisture and smooth the cuticle.
Your hair feels smoother and softer from the very first treatment. With regular use the results build, and each treatment lasts roughly 4 to 8 weeks.
Shipping is free and every order leaves us within 24 hours. You're also covered by our 30-day money-back guarantee — try it for a full month, and if your hair isn't smoother we'll refund every cent.