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💅 Elevate your nail game—because strong nails mean strong statements.
Mavala Scientifique K Plus Nail Hardener is a 5 ml professional-grade solution designed to restore and strengthen soft, splitting nails. Infused with PRO Keratin and free from formaldehyde, it penetrates deeply to harden the nail plate, promoting healthy growth and resilience. Ideal for post-gel nail recovery, it absorbs quickly without residue and requires minimal weekly application for lasting results.


















| ASIN | B076DJRBFP |
| Best Sellers Rank | 6,414 in Beauty ( See Top 100 in Beauty ) 13 in Nail Strengthening |
| Brand | MAVALA |
| Brand Name | MAVALA |
| Customer Reviews | 4.4 out of 5 stars 12,170 Reviews |
| Item Form | Solution |
| Item Weight | 35 Grams |
| Item form | Solution |
| Item weight | 35 Grams |
| Liquid Volume | 5.0 |
| Liquid volume | 5.0 |
| Manufacturer | Mavala |
| Manufacturer Part Number | 99501 |
| Model Number | 99501 |
| Number of Items | 1 |
| Number of items | 1 |
| Package Size Name | 5 ml |
| Size | 5 ml (Pack of 1) |
| Speciality | Strengthening and Hardening Nails |
| Specialty | Strengthening and Hardening Nails |
| Unit Count | 5.0 millilitre |
A**R
Great product
I’m genuinely impressed with the results! Within just a couple of weeks, I noticed a significant improvement in the strength and resilience of my nails. They used to be quite brittle, but now they feel a lot more durable and healthy. Good after having my nails damage by gel. The application is super easy, and the product absorbs quickly without leaving any sticky residue. Overall, I’d highly recommend it to anyone looking to improve their nail health. Five stars!
E**A
Finally, Strong, Healthy Nails After Gel Removal!
After removing my gel nails, my natural nails were extremely thin, weak, and prone to chipping and breaking. At first, nothing seemed to help because my nails were so damaged from the gel removal. However, once my natural nail started to grow out a little, Mavala Scientifique K+ Nail Hardener made a huge difference. This product really helped strengthen and protect my nails. I noticed that they stopped chipping and breaking as easily, and they finally had a chance to grow properly. It’s important to know that it won’t work miracles immediately after removing gel nails when the nails are paper-thin, but once your natural nail begins to recover, this product is fantastic. I only apply it once a week, which is exactly how it’s meant to be used, and I also make sure to use nail oils regularly to keep my nails hydrated. That combination worked really well for me. Now my natural nails look so healthy and strong again. I still use it once a week or every two weeks just to maintain the strength and keep my nails in good condition. I’m really happy with the results and would definitely recommend it to anyone trying to grow and strengthen their natural nails after gel removal.
J**O
Seems to be ok
Not sure it’s working
C**L
Excellent product.
I first descovered this nail treatment 65 years ago! It worked then on my nails that have always been weak. The ingredients of the product have changed over the years due to modern technology identifying preferable elements. I unhesitatingly recommend this product.
H**A
Noticeably Stronger Nails in Just Weeks
After using the Mavala Nail Hardener for a few weeks I had definitely noticed a difference. My nails feel healthier, stronger and I’ve experienced much less breakage compared to before. It’s very easy to use and absorbs well into the nail without leaving any sticky residue. A little goes a long way, so the bottle lasts a long time, making it great value for money. Overall, a really effective product that does what it claims; I’d highly recommend it if you’re trying to strengthen weak or brittle nails.
G**N
Good stuff
After only a couple of weeks my nails have improved. It works!
J**L
Not a dramatic improvement
Have been using every couple of days for the last month. Not a dramatic improvement but OK
J**O
Amazing product - it works!!
I don’t usually write reviews as I’m just too busy but wow I had to come and write this one!! Following 3 consecutive shellac manicures my nails were totally ruined - fragile, dry and splitting at the ends and breaking non stop. I was recommended to a very good manicurist who recommended this product - used it for a week (applied it 3 times that week) and my nails are the strongest they have been in a really very long time! Blown away!!!
E**E
gute Qualität unnd geruchsarm :)
sehr gut für weiche Nägel, meine Frau ist voll zufrieden!
A**A
رووعة
ممتاز
R**E
Long and strong nails in 4 months of use
I made a comment after 2 months of use and came here to correct it. Well, my nails always took a long time to grow (because I always bit them), I did stretching in Brazil, and it ruined my nail (it became as thin as paper). I bought this product and used it for 1 month and a half and my nails were weaker than before, I actually thought it wasn't working, but I kept using it. Today, 3 and a half months later I am shocked!!!!! My nails grow in 1 week, I always have to file them (otherwise they get huge and make it difficult to wash my hair, lol). They are hard (they no longer bend, they no longer break). I'm taking 1 Biotin tablet just to help with growth. I saw some Brazilian reviews, where the girls say that the Mavala bottle lasted 1 year, and despite using it every week, and having been using it for almost 4 months, now I'm buying the second bottle (I still have a little in the bottle, but I don't want to interrupt the use, until a new bottle arrives). I think it's worth it. How I use it: I remove the cuticle, wash the nail with a brush (nail) and neutral soap (top and bottom of the nail), dry well, and then apply Mavala Top Coat. I wait for it to dry and apply the polish normally. I only use it when I get my nails done (1x/week). I posted a before photo (with cell phone in hand) and an after photo (with nailsssss).
J**I
Impeccable
Fonctionne très bien, il est totalement invisible.
M**S
Étonnant!
Je suis vraiment pas déçue ! ✨ Contexte: j'ai les ongles abîmés par une dépose mal réalisée et j'utilise mes mains et ongles tous les jours au travail de façon intensive. ✨ Ça fait 1 semaine que je l'applique tous les jours (2 couches), et parfois 2 fois par jours. Au bout d'une semaine je vois et sens déjà une grande différence. Le bout de l'ongle est plus dur et résistant. Les endroits où j'avais des dédoublement s'effacent, et Le bout de l'ongle est plus blanc. Avantages du produit : est absorbé très rapidement par l'ongle, le temps que je fasse la 2ème main, la 1ere est sèche donc je peux enchaîner direct avec la 2eme couche. L'odeur est neutre. Il fonctionne sur moi. Inconvénients : rien a voir avec le produit, c'est le carton dans lequel on le reçoit qui est nul est pas adapté, l'emballage du produit était tout abîmé, c'est hyper risqué. On envoi pas ce type de colis dans un carton plat ! Je recommande, j'ai hâte de voir l'évolution sur plusieurs semaines / mois ! EDIT 05/05 : Après quelques semaines d'utilisation, je vois que mes ongles sont en bien meilleur état et plus épais et plus durs. J'ai toujours de la casse sur les ongles que je malmène le plus au travail, mais j'ai pas trop le choix , j'ai pris pour habitude d'utiliser mes ongles comme des outils ahah. Faite attention a ne pas en mettre sur votre peau car effectivement, ca va beaucoup la durcir !! Bref je continue le traitement et reviendrai donner des nouvelles petit à petit EDIT 06.07 : j'utilise toujours le produit, 2 couches tous les 4 jours environ. Mes ongles ont vraiment changé, ils sont plus beaux et résistants, le bout de l'ongle est bien plus dur et j'ai nettement moins de casse. La prochaine étape serait de reprendre les poses de VSP et de continuer ce traitement. Je continue donc de vous recommander le produit que je trouve très efficace ! 😊 EDIT 18/08 : J'utilise toujours le produit ( il semble encore plein, j'ai l'impression qu'une vie ne suffira pas a en venir a bout ahah). Environ 2 applications par semaines, je ne saurai plus m'en passer. Mes ongles sont bien plus beaux et forts qu'avant, malgré le boulot j'arrive à les maintenir en bonne santé! Donc je le recommande toujours, si vous avez les ongles abimés par des poses et déposes de vernis semi- permanent etc, vous allez les ressusciter ! EDIT 17/11/24 : Et ben sans surprise, quand j'oublie d'en mettre pendant au moins 1 semaine, mes ongles redeviennent mous et cassants .. donc le produit est toujours aussi efficace sur moi et je vois une réelle différence ! EDIT 15/06/2025: me revoilà :) plus d'un an d'essai plus tard! mon avis reste le même, ce produit fonctionne très bien sur moi, la différence est flagrante quand je fais une pause du produit, mes ongles cassent vite et poussent lentement et quand je recommence à l'utiliser, mes ongles poussent vraiment tellement plus vite et plus forts ! je n'ai toujours pas fini le flacon acheté il y a un an, achat hyper rentable, je vous le recommande toujours :)
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