5 Best Nail Strengtheners Reviews of 2023 in the UK (2025)

If you've already tried numerous strengthening products but none of them has worked for you, it's time to switch to something more serious and professional like the Nail Magic Nail 2-in-1 solution. It really works miracles and can repair even extremely split and broken nails relatively quickly.

As the name suggests, this nail product can bring a double benefit to your nails. Not only does it make your nails harder but also it deeply conditions them to bring back their beauty. Made with a unique blend of ingredients, it enriches your nails with a generous amount of nutrients, making them grow healthy and shiny. And owing to the addition of the castor oil, the product creates a protective barrier for that nourishment. That is to say, it shields nails from negative environmental effects. Castor oil is also known for its anti-viral, anti-fungal, and anti-bacterial properties. Hence, you can have peace of mind knowing that no fungi or bacteria will lurk in your weak nails.

This powerful nail conditioner should be used once a week after the initial treatment. It goes on well and gives a slight sheen to the nails. It can act as a standalone treatment as well as a base coat or a top coat.

In all, if you have terribly flakey nails and want to grow them strong and healthy, we would recommend going with the Nail Magic Nail. It works its magic where others fail.

For those who would like to repair the nails after long years of wearing gel nail polish, the OPI Nail Envy Treatment can come to rescue. It's a super-powerful treatment that can help restore even extremely weak and damaged nails in a short while.

Formulated with hydrolyzed wheat protein and calcium, this nail strengthening product provides the maximum hardness to your nails. When it comes to maintaining the strength and structure of nails, these ingredients are known to be the best at keeping the tissues of the nail bed healthy. So, they will help you grow strong and long nails that will be less prone to dryness. And what is notable, after the very first use, you'll notice an immediate improvement.

This bombproof miracle polish can be used as a standalone treatment or as a base coat. We would like to stress that this strengthener is available in various colours, unlike many other similar products. To specify, you can get such nude shades as Samoan Sand, Hawaiian Orchid, and Bubble Bath. Though the polish is almost sheer with one coat, two or three coats do the trick.

To conclude, if you'd like to treat your nails while masking the damage and small imperfections, the OPI Nail Envy Treatment is the best solution. It'll breathe new life into your weak, damaged and cracked nails in the most beautiful way.

Do you have dry, brittle or splitting nails that are prone to break, tear and flake? If so, we recommend trying the CND Rescue Daily Keratin Treatment. It's a highly effective product formulated with Keratin proteins that can penetrate into your nails, strengthening the plates and restoring moisture balance. Keratin proteins also gradually build in some layers of protection and shield your nails against colour staining or damage from polishes. Also, they're able to reduce white marks and prevent yellowing, thus, making your nails look much more beautiful. The additional components, Jojoba oil and Sweet Almond oil, in their turn, condition the nail plate and nourish surrounding skin, delivering a softening effect.

For the best results, this CND product should be used directly on the bare nails with no polish or Shellac, otherwise, it'll give only partial penetration. The oil should be massaged into the entire nail, nail edge and cuticle twice daily. It's recommended to apply it for a two-week period for optimal results; however, those with particularly weak nails may want to extend this period up to four weeks. In general, according to many users, nails become noticeably stronger and stop peeling already after a week of use.

If you'd like to repeat the treatment course after a while, you'll be pleased to find out that there are metal balls inside the bottle to agitate the solution and keep it from settling, which means it won't get tough and lose its effectiveness. Overall, each bottle lasts for over six months with regular use (twice a day). So, it's a very cost-effective Keratin-infused product that bonds to natural proteins in your nails to reduce peeling and white spots for healthier, stronger, and more beautiful nails.

If you're in search for an effective rebuilding and hardening serum that will quickly seal your nail plate and protect it against all kinds of damage, you should take a closer look at the Mavala Scientifique K Plus Nail Hardener. It's a perfect solution for soft nails that tend to split and break.

Infused with PRO Keratin, the serum works along with the nail keratinization process. It gets deep into the nail plate and makes it grow harder. In other words, it's a unique nail treatment that remarkably improves the adherence of keratinized nail cells forming nail disks.

Like the majority of other similar products, the Mavala Scientifique K+ is not an instant nail hardener. It gradually enriches your nails with nutrients and makes them grow harder in a few weeks. For the best results, you should apply it to clean nails 2-3 times a week. Move the brush from the centre to end and avoid cuticles and skin around your nails. The serum soaks quickly into your nails, allowing you to put a polish on top. The bottle contains only 5 ml; however, a little goes a long way, so it will last you nearly a couple of months.

All things considered, the Mavala Scientifique K+ is a great nail care product that boosts natural keratinization process of your nails. It offers quick help for fragile tips and flaking nails.

The Sally Hansen nail hardener is a real boon for all eco-conscious customers in the UK. It's completely safe, cruelty-free, and vegan.

With 100% vegan formulation, the hardener uses no animal-derived products and nasty chemicals such as acetone, phthalates, parabens and other nail toxic ingredients. It's plant-based and contains such naturally-derived ingredients as potato, wheat, corn, and sugar cane. Still, it's quite effective at toughening the nails up.

Just like the nail polish, the brush is produced from 100% plant-based ingredients. To specify, the bristles are made of castor bean oil and can help you achieve a perfect application.

This hardener is a completely clear varnish that can be worn alone, as a base coat under a coloured polish, or as a top coat over it. It dries fairly quickly and leaves a nice shine on your nail that doesn’t go dull after a few days. Also, it doesn't chip even with lots of layers. However, we believe you'll need only one coat as it has quite a hard texture. For the same reason, it also significantly improves the appearance of ridges even when applied alone.

All in all, if you want to achieve radiant, healthy-looking nails in the most ecological way possible, this product is for you. This is a good natural hardener that will appeal to most people searching for ethical beauty products.