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Damaged nails can be uncomfortable and unsightly, but with our hands often being put under strain from daily tasks, it can sometimes be easy for signs of wear and tear to appear. Now, beauty lovers have been praising a bond-building nail serum they say is a ‘game changer.’
OPI’s Repair Mode™ Bond Building Nail Serum with Patented Ulti-Plex Technology™ penetrates the nail’s surface to build new bonds from within. The clever product normally retails for £29, but at the time of writing is available in the brand’s spring sale for £20.30.
Shoppers can also use the code TREAT20 for 20% off which brings the price down to £16.24, though the code expires on May, 31 2026. The product has amassed plenty of fans online, with OPI customers leaving it rave reviews.
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OPI says that when used as directed, nails look improved after the first application. After 6 days of use, users can expect smoother, stronger nails that are resistant to breakage, along with an improvement in the appearance of pesky ridges.
If OPI’s offering doesn’t suit, then elsewhere those with weak talons may wish to opt for the NAILS.INC Back To Life Strengthening Nail Treatment which costs £15. It’s enriched with five reviving oils to help repair and add glow to lacklustre nails.
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£29£16.24 using code TREAT20OPIBuy here
Shop the Repair Mode™ Bond Building Nail Serum at OPI
Meanwhile, Sally Hansen’s Miracle Cure Nail Strengthener is normally priced at £11 but is currently on offer for £8.80 at Boots. It helps reinforce nails, prevent peeling, and seal the nail plate.
OPI’s Repair Mode™ Bond Building Nail Serum isn’t the brand’s only popular treatment. The Nail Envy Strengthener comes in a sheer colour and uses Tri-Flex Technology™ to strengthen and protect talons against chipping, peeling, and splitting.
Usually retailing for £23, at the time of writing it’s £16.10 on sale. Back to the Repair Mode™ Bond Building Nail Serum and beauty lovers have left high praise for their results online.
View 4 ImagesFans say the product is ‘amazing’
One fan of the serum said as part of a lengthy review: “Amazing product. I’ve had all sorts of fake nails over 20 years, it got to a point where it started to be painful having them done.
“But, my nails have always been weak and looked awful. So, I covered them up with nail varnish, coloured and clear, also used lots of other types of products that promised to help my nails, but they all made it worse, and I am a peeler, so I always peeled the varnish off, which made my nails worse.
“It was endless, painful and uncomfortable. Then, whilst browsing through the endless treatments, I see OPI repair in Boots, and yes! It’s slightly expensive. What a find, it’s an amazing bottle of excellence, and whilst not cheap, after two weeks of using it my nails are changing, coming back to life.”
Meanwhile, a second raved: “Wow. Bought last week and have used for 6 days, can already see a vast improvement in my nails, despite swimming most days. Very impressed and relieved!”
View 4 ImagesShoppers say their ‘nails have never been as strong’ using OPI’s serum
A third said: “Nail game changer. Worth every penny. Incredible product – nails have never been as strong, are smooth and look super healthy. I invested in this product after giving-up having my nails done in a salon (BIAB), so they were weak and damaged.
“The bottle is about half the price of a professional mani, with the benefit of getting your own lush, natural nails instead of plastic coated ones. Results were apparent within a week and I’ve kept up the recommended x2 daily application to get the best results. Love how quickly it dries too – no faffing about waiting for it to dry.”
It is worth noting that one said: “Tried due to hype. It’s okay, I haven’t noticed anything specific I won’t be buying again it’s a shame.”
View 4 ImagesThe brand’s Nail Envy is another popular choice
However, someone else commented: “A wonder product, much needed by many of us with weak, flaking finger nails. The serum is easy to apply and dries straight away. It does take time for nails to grow anyway, but the wait was worth it when using this serum.”
A further review reads: “Been using this for a couple of years now, I have never been able to grow my nails. This really fixes my splitting nails. Ordered another as I have worn Acrylics for 2 months, after just 7 days my nails are looking normal again, going onto Nail Envy now to strengthen and give them a chance grow again.”