If you have brittle nails, this best-selling strengthener is your best bet for growing longer, healthier ones

Our team is dedicated to finding and telling you more about the products and deals we love. If you love them too and decide to purchase through the links below, we may receive a commission. Pricing and availability are subject to change.

Weak, brittle nails can be the result of a few things. Maybe you peeled off your gel polish (don’t do that!), have been over washing your hands or even have a nutritional deficiency. While drinking extra water could help hydrate your skin, it doesn’t work to give you strong and supple nails. Instead, you’ll want to use a nail strengthener like OPI’s Nail Envy.

OPI Nail Envy Nail Treatment, $18.94

Credit: Amazon

The OPI Nail Envy Nail Treatment is Amazon’s No. 1 best-selling nail strengthener, and it has over 30,000 five-star ratings. You can use it as a standalone treatment or a base coat, but just beware, it’s not an overnight fixer. It may take a couple of weeks or even months for you to really notice the results, but if you put in the work, you will be rewarded. Think of it like skin care but for your nails.

Highly recommend,” wrote one reviewer. “My nails were dry, splitting and weak. They were a mess. And they were not only ugly, but I had painful hangnails because of the dry cuticles. I used OPI faithfully and saw results in a few weeks. After three months, I’m very happy with my healthy nails.”

To use, gently push your cuticles back, and apply two coats of the Nail Envy to clean nails. You should reapply one coat every other day. After one week, you can use OPI Polish Remover to remove the Nail Envy Treatment and repeat this process until your nails are as long and strong as you want them.

According to the product description, OPI Nail Envy contains hydrolyzed wheat protein and calcium to help you grow stronger nails. However, OPI offers a few different types of its Nail Envy Treatment. You can get the standard clear coat, a matte coat, one for specifically dry and brittle nails, one for soft and thin nails and another for sensitive and peeling nails. (The latter is formaldehyde-free.) Additionally, you can get Nail Envy in light pink and light beige colors.

If you want to attack your weak nails full on, you can also keep your hands and cuticles moisturized with cuticle oil, use less acetone-based products and even speak to your doctor about taking a biotin supplement. However, starting with OPI’s Nail Envy is an easy way to treat your nails — and it costs less than $20 on Amazon.

More from In The Know:

CAVA customer gets a little too excited about the lunch bowl

TikTok loves these affordable pump-top jars for storing face moisturizer because it’s cleaner and the product won’t get under your nails

If your apartment has no ceiling lights, this dimmable lamp on Amazon is the perfect substitute

TikTok found an affordable alternative for Drunk Elephant's cult-favorite bronzing drops – and it's $11 cheaper

Listen to the latest episode of our pop culture podcast, We Should Talk: