A popular nail strengthener from OPI, known as Nail Envy, is being hailed as a 'miracle in a bottle' by customers who have seen remarkable improvements in their nail health. Priced at under £15, this product has garnered rave reviews for its ability to transform weak, brittle nails into strong, resilient ones.
What Makes OPI Nail Envy Special?
The OPI Nail Envy Strengthener features a new vegan formula and is available in a variety of shades. The classic option offers a sheer, glossy finish, while other colours include glittery midnight blue, white, red, beige, dark pink, maroon, and two sheer pink tones. At the heart of the formula is Tri-Flex Technology, which creates a liquid barrier over the nail to build strength gradually. Combined with biotin, calcium, and vitamins A, C, and E, this treatment helps protect against chipping, peeling, and splitting while promoting overall nail health.
How to Use It
The recommended regimen is simple: apply two coats on the first day, then one coat daily for five days, then remove and repeat. For best results, it can be used alongside Repair Mode as part of a comprehensive nail care routine. According to OPI, nails can become up to 95% stronger after just one week of consistent use.
Customer Reviews
Customers have been overwhelmingly positive. One reviewer said: 'My nails no longer bend like paper. What a marvellous product! This is the longest my nails have been in years and they haven't broken at all, compared to breaks every few days without it.' Another added: 'This nail strengthener does exactly what you're hoping it would do. It acts like a shield so my nails don't snap.' A third customer with 'awfully fragile nails' noticed a major difference within a week, noting that a severe peel smoothed over completely after applying more Nail Envy.
Price and Availability
The OPI Nail Envy Strengthener is currently available for £14.72, reduced from £23. Additionally, OPI is offering an extra 30% off with the code TREAT20, valid until 23 June at 11:59pm. Alternative products include the Mavala Scientifique K+ Nail Hardener at £21 from LookFantastic and the Boots Nail Strengthener 10ml for £5, which is ideal for dry, brittle nails.
Overall, the OPI Nail Envy Strengthener remains a top choice for those seeking healthier, stronger nails, backed by a scientifically formulated approach and glowing customer testimonials.



