10 Best Nail Strengtheners 2025 in the United States

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.

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.

The OPI Natural Nail Strengthener is a solid choice for anyone looking to enhance their nail health while enjoying a glossy finish. Key ingredients like Vitamin A and E are beneficial for strengthening nails, making this product particularly appealing for those with brittle or weak nails. The vegan formula is a standout feature, ensuring that it contains no animal-derived ingredients, which is great for environmentally conscious users.

In terms of application, the Pro-wide nail polish brush is designed to provide smooth and even coverage, reducing the chances of streaks or bubbles. This ease of application is a significant advantage, especially for individuals who may not be as skilled in nail care. Additionally, the fast-drying formula means you won’t have to wait long before you can go about your day, making it convenient for regular use.

There are a couple of points to consider. While the product claims to provide up to 7 days of wear when used with OPI's 3-step system, results may vary depending on individual nail types and conditions. Some users may find that they need to reapply more frequently to maintain the desired strength and appearance. Furthermore, although it boasts a high-shine finish, it might not be as long-lasting as other commercial nail products, depending on your lifestyle and activities.