10 Best Nail Strengtheners 2025 in the United States

The OPI Nail Envy Strengthener in Bubble Bath shade is designed to help people with weak or thin nails by making them up to 95% stronger within a week when used as directed. It uses a special Tri-Flex Technology that builds up layers on the nails to protect them from common problems like chipping, peeling, and splitting. This treatment is enriched with vitamins A, E, C, Biotin, and Calcium, which are known to support nail health and growth. The formula is vegan and free from parabens, which is a plus for those looking for gentler, cruelty-free options.

The product comes as a sheer nude pink crème finish, giving a natural and polished look without being too bold. It’s applied like a regular nail polish and dries fairly quickly, making it easy to fit into your routine. As a base treatment, it can be used alone or under regular polish. The 15 ml bottle is a standard size, which should last a fair while but might require repurchasing if used daily.

This product is well suited for anyone looking to improve nail strength and overall nail health with a subtle, natural-looking finish. Its main function is protective treatment rather than color coverage, so it might not satisfy those seeking a vibrant polish.

OPI Nail Envy Nail Strengthener is a well-regarded product in the nail-strengtheners category, particularly beneficial for individuals with weak or thin nails. Its standout feature is the Tri-Flex Technology, which offers a protective layer that can make nails up to 95% stronger in just a week when used correctly. This strength is essential for those who experience common nail issues like chipping, peeling, or splitting. The formula is infused with vital vitamins A, E, C, Biotin, and Calcium, promoting healthier nails and enhancing their overall appearance.

Applying this nail strengthener is straightforward, as it comes in liquid form and is intended to be used as a base coat. It dries clear, making it versatile for use alone or under nail polish. The drying time is relatively quick, which is a plus for those who want to get on with their day without waiting long for their nails to dry.

A significant advantage of this strengthener is its vegan formula, appealing to those who prioritize cruelty-free products. Additionally, it is gluten-free, catering to a broader audience with dietary restrictions. One minor drawback is that users need to apply it regularly for the best results, which might not suit everyone's routine. Also, although it has a good reputation in the beauty community, it may not be the most affordable option on the market, especially for those trying to stick to a budget. OPI Nail Envy Nail Strengthener presents a solid option for anyone looking to improve their nail health and strength, particularly those with weak nails seeking a reliable treatment that is easy to use and offers visible results.

Onyx Professional Hard as Hoof Nail Strengthening Cream is designed to cater to individuals struggling with weak, brittle nails. Its standout feature is the blend of natural ingredients, including jojoba oil and vitamins, which aim to nourish and repair nails without harsh chemicals. This makes it a strong choice for those looking for a gentle yet effective nail treatment. The product is also praised for its ability to repair damage from artificial nails, absorbing quickly without leaving a greasy residue, which is a definite plus for users seeking convenience.

Application is straightforward; it requires massaging into the nail beds and cuticles up to three times daily, making it easy to incorporate into a daily routine. Additionally, users can expect quick results, with many reporting stronger nails in just a few applications. This makes it appealing for anyone who has had previous negative experiences with other nail strengtheners.

On the downside, some users may find the required frequency of use a bit demanding, especially if they lead busy lives. The scent, while pleasant, could be a matter of personal preference, and those who dislike coconut fragrances might want to consider this before purchasing. Moreover, as with any topical treatment, results can vary based on individual nail health and conditions, so it might not work as effectively for everyone.