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(14 customer reviews)

Amino-15: Hair Straightening System

Version 2

Our amazing hair straightening system delivers 6+ months of straight & rejuvenated hair. All while being vegan and full of natural goodness.

You can also pay in instalments via Klarna

This product is only available to professionals

Please sign in with your professional account or press the button below to sign up for a professional account.  

What's in our product?

We believe in transparency and as such, our training goes to great lengths to explain every single ingredient used in our products. Below is an overview of some of the main ingredients used in the Amino-15 Hair Straightening System.

  • 15 Amino Acids

    This innovative blend works by bonding with the weakened proteins in damaged hair, effectively restoring its structure and integrity. It also infuses hair with essential nutrients, enhancing moisture retention and safeguarding against environmental stressors.

  • Sea Buckthorn Oil

    Contains vitamins E and C, as well as omega-3 and omega-6 fatty acids, which nourish and strengthen hair.

  • Carob Seed Extract

    A range of amino acids, peptides & molecules are extracted from this nourishing seed. They are imbued into the hair during the straightening process.

  • Ceramide 2 Analogue

    Our Ceramide Analogue is a lipid-like molecule found in hair that seals the hair cuticle, removing frizz caused by lifted hair cuticles.

  • Vitamin E

    Vitamin E is found in many fruits, vegetables & seeds, and is a powerful anti-oxidant. It protects your hair from oxidative damage & free radicals.

  • Coco-Caprylate

    Coco-caprylate is a light and silky emollient, derived from coconuts, that can make your hair feel smoother, softer, and more manageable. It helps to reduce frizz and enhance the performance of other hair care ingredients.

Proven results

Our claims are tested by an independent laboratory, meaning you can expect these results on your clients. 

42%
Stronger hair
58%
Less split ends
80%
Healthier hair
93%
Shinier hair
47%
Increased hair protection
80%
Softer hair

Overall, 91% of women surveyed would recommend Rejuvenum to a friend.

Rejuvenum vs. Conventional Straightening Treatments

Rejuvenum Treatment

Creates new bonds
Strengthens hair
Free from harsh chemicals.
Can wash hair immediately

Hair Relaxing

Breaks disulphide bonds
Damages hair
Contains harsh chemicals
Avoid hair washing 48-72 hours

Keratin Treatment

Laminates the hair
Heavy on the hair
Can contain harsh chemicals
Avoid hair washing 48-72 hours

The restorative effect

Delving into effects invisible to the naked eye, the electron microscope images below display individual hairs. On the left, noticeably damaged (bleached) hair contrasts with hair treated using ingredients from our product (shown to the right). 

Nourishment and repair

In this image, we see the before and after following a treatment with the carob seed extract used in our products. These biomimetic, plant-derived molecules uniquely repair hair both internally and externally, resulting in stronger hair and sealed cuticles.

Fantastic smoothing

In this image, we see the before and after pictures following treatment with the ceramide analogue used in our products. As shown, it does an amazing job at sealing hair cuticles, even on very damaged hair. This reduces further damage and moisture loss. 

What makes us different?

Made in the EU
100% Vegan
Manufactured under GMP
Fantastic Support
Dermatologically Tested
High Quality Ingredients

Real people, real results

The images below show before and after pictures following treatment with the Amino-15 Straightening System. The after pictures are taken just after washing & blow drying, and therefore show what the client can expect when washing and blow drying their hair at home.
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Rejuvenum & Nature

At Rejuvenum, all of our products are vegan and free from formaldehyde, parabens, cysteine and microplastics. In addition, with every purchase of our 1L Hair Straightening System, we plant a tree - offsetting more than 150 kg of carbon dioxide.

Rejuvenum & Nature

At Rejuvenum, all of our products are vegan and free from formaldehyde, parabens, cysteine and microplastics. In addition, with every purchase of our 1L Hair Straightening System, we plant a tree - offsetting more than 150 kg of carbon dioxide.

Super-powered aftercare

Designed to work with the Amino-15 Hair Straightening System

Amino-15: Shampoo

Plant derived ingredients cleanse and restore the hair while moisturising the scalp.  
View

Amino-15: Conditioner

A mixture of plant oils and extracts condition, hydrate and rebuild your hair.
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Frequently Asked Questions

Aqua, Glyoxylic Acid, Coco-Caprylate, Cetearyl Alcohol, Parfum, Ceteareth-20, Butylene Glycol, Glycine, Serine, Glutamic Acid, Aspartic Acid, Leucine, Alanine, Lysine, Arginine, Tyrosine, Phenylalanine, Threonine, Proline, Valine, Isoleucine, Histidine, Glyceryl Stearate, Tocopheryl Acetate, Prunus Amygdalus Dulcis Oil, Glycerin, Hippophae Rhamnoides Fruit Extract, Rosmarinus Officinalis Leaf Extract, Glycol Distearate, Hydrolyzed Ceratonia Siliqua Seed Extract, Zea Mays Starch, Polyquaternium-7, Guar Hydroxypropyltrimonium Chloride, Tetrasodium Glutamate Diacetate, Sodium Benzoate, Potassium Sorbate, PEG-8, PEG-8/SMDI Copolymer, Palmitoyl Myristyl Serinate, Sodium Polyacrylate, Phenoxyethanol, Biotin
Keratin treatments simply laminate the hair. Our product penetrates the hair and works on the inside. Chemical relaxers break disulphide bonds - our product does not break any bonds - in fact it adds new bonds which lock the hair in a straight position. 
Yes. It does not damage the hair and does not contain any harmful chemicals like formaldehyde, ammonia or carbocysteine. Our product has been dermatologically tested.
In general, yes. There is nothing harmful in our products. However, preganacy is a sensitive time, therefore, before the treatment show the ingredients list to your doctor and ask if you can have the treatment. You can go ahead if they agree. 
Yes! We tested our products even on 4C afro hair. Our product effectively straightens all hair types. 
No. It will not damage your hair. It will make it look healthier and stronger. The only potential damage can come from setting the temperature of the hair straightening iron or doing too many passes but the product itself will not damage your hair.
Yes. The product works on any hair type. The only thing to be mindful of is warming of the hair. This is not from the product but from the heat of the straightener. Simply reduce your temperature and increase your passes. You can apply toner after 5 days!
Yes and even longer. Your customer will come in for root touch up before the product washes out. The longest we have seen it last is even 12 months. 

Changelog

Version 2 - Our improved formula. Mostly same formula you love but with tweaks and additions.  Better ingredient absorption into the hair. Improved product consistency, easier to apply. Should provide better straightening. 

Version 1 - Our first version delivering great results without harsh chemicals with effects lasting 6+ months.  

See our customer reviews

14 reviews for Amino-15: Hair Straightening System

    Amino-15: Hair Straightening System photo review
    Sarah Oliver
    May 4, 2025
    Done my first treatment on my lovely client and was amazed by the results hair felt amazing and was so straight she was over the moon with her results
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    Amino-15: Hair Straightening System photo review
    Amino-15: Hair Straightening System photo review
    +1
    Edel Cashman
    April 1, 2025
    I've been using REJUVENUM for a few months now and absolutely love the results, as do my clients, This is the game changer of hair straightening and strengthening treatments. Add this exceptional service to your salon and see some amazing results ✨️
    Amino-15: Hair Straightening System photo review
    Sophie South Hair
    March 20, 2025
    I’ve had amazing results from this product and I cannot recommend it enough! I’ve got more bookings coming up and clients are wanting to step away from their keratin treatments. My clients are recommending to their friends and family, I’m so glad I decided to do the training on this product, best decision of 2025!
    Megan
    February 20, 2025
    We couldn’t be more impressed with the Amino-15 Hair Straightening System in our salon. From the very first use, we saw remarkable results. The treatment gives our clients smooth, frizz-free hair with a natural shine that lasts. Not only is the process quick and easy for our stylists to apply, but it’s also gentle on the hair, leaving it feeling soft and healthy. Our clients are thrilled with the transformation, and we’ve noticed increased satisfaction and repeat bookings. The Amino-15 system is definitely a standout in our services, and we’re proud to offer it in our salon!
    Amino-15: Hair Straightening System photo review
    Yvonne Aherne
    February 19, 2025
    My clients and I are absolutely loving Rejuvenum! For years I have thought about providing a straightening treatment for my clients but I worried that they were all just too damaging, hair health is one of my top priorities for my clients, when I first heard about Rejuvenum from friends in the industry I proceeded with caution and tested it multiple times before providing it to my clients, and I was so pleasantly surprised! I am stunned by how effective Rejuvenum is as a straightening treatment while also leaving the hair so strong and healthy! Rejuvenum as company ethos also fits perfectly with my values as a cruelty free salon, 10/10 amazing product and amazing company 🤍🤍
    Gunita Serbakova
    February 19, 2025
    Amino15 is the best hair straightening treatment, I did it for my own hair last June and still very happy! Because I never offered a hair straightening service in my salon it is taking a time to get customers for it, but I know that they will come!!!Thank you!
    Amino-15: Hair Straightening System photo review
    Diane Breslin
    February 18, 2025
    I have been using Rejuvenum Amino 15 in my salon, the hair studio for six months now. The feedback has been nothing short of amazing, it's great for all hair types & results last 6+ months. My customers have expressed that they have had a reduction in split ends & brittleness of their hair. It has worked especially well For those with unruly & damaged hair. Free from harsh chemicals!
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