A long-lasting base coat that fills in any vertical nail ridges while it primes the nails for polish. Your lacquer of choice will look even on the surface (no grooves or bumps), and it simultaneously repairs the nail plate.

B.04 Ridge Filler Base Coat, sundays ($18)

Seal painted tips with this shiny top coat, or use the glossy formula on natural nails for a protective sheen. Part of strengthening your nails is sticking to polishes with nourishing, conditioning ingredients, and this number provides a patent-leather finish without sacrificing the health of your nails. 

Like Glass Nail Lacquer, Paintbox ($22)

A win-win scenario with this ridge filler: On its own, the formula coaxes soft, brittle nails back to life—and when you apply it under polish, you'll have a flawless color payoff. 

Nail Armor, Orly ($12)

This super-nourishing nail treatment is filled to the brim with nail-healthy actives: There's glycolic acid (which research has shown can help with restoring nail strength1), malic acid, and lactic acid, to gently exfoliate and rejuvenate the nail plate; then there's a host of antioxidants—vitamins C, E, and B5—to hydrate and protect. Swipe it on whenever your nails need some extra love. 

HyperRepair, JinSoon ($22)

A base coat formulated with prickly pear water, coconut, and castor oil that's deeply hydrating and replenishing. White spots, where? 

Foundation, Rooted Woman ($15)

Cuticle oil is a mainstay for healthy nail care—strong nails are happily moisturized, after all. This elixir contains coconut, jojoba, and grapeseed oils to keep the nailbeds supple and smooth.  

Nail Elixir Cuticle Oil, Mischo Beauty ($23)

Remember when we mentioned garlic as a clean nail-strengthening ingredient? That's because it has antifungal and antibacterial properties that experts have claimed can help aid nail-growth. As Mary Lennon, co-founder of Côte, once told us, "Garlic is naturally fortified with selenium... This protects the body from damage caused by free radicals and infection and basically assists in improving nail growth and health."

Growth with Garlic Base Coat, Côte ($21)

This strengthening base coat contains celery seed extract, which may have antioxidant properties2, according to one study, tea tree oil (a natural antiseptic), and horsetail extract—which has been found to help manage nail psoriasis3. If you're in the market for some major recovery (you're doing some damage control from gel or acrylics, perhaps), this is your go-to. 

The Rehab Reparative Base Coat, tenoverten ($21.99)

This treatment dries down to a sheer plum color, for those in need of some nail repair who can’t bear the thought of leaving nails, well, bare. Along with the jelly-like hue, it has hydrolyzed keratin, tea tree oil, antioxidant-rich açai berry, and vitamin E to replenish, moisturize, and protect. 

Victoria Plum Jelly Preserve Strengthening Treatment, Butter London ($18)

Another number with horsetail, which as we mentioned has some nail-healing properties. The ingredient also is antimicrobial4, rich in antioxidants5, and a potent anti-inflammatory6—a clear winner in nail care. 

Damage Control Nail Strengthener, ella + mila ($10.50)

This ridge filler evens out texture with ease, and it even helps bind flakes on the free edge (bye, peeling nails). A mainstream clean classic that doesn't disappoint. 

Get Even Ridge Filler Base Coat, Zoya ($12)

This 10-free strengthener imparts a healthy glow to your nails, even without polish—think flesh-toned nail plates and smooth-to-the-touch tips. Plus, it's housed in a gorgeous, vanity-worthy bottle—keep it on your bedside, and apply it whenever your nails feel thirsty. 

Jack of All Trades Basecoat, Janet & Jo. ($18)