Brittle nails after years of gel treatments: This award-winning treatment, voted the best repair product of 2026, works from the inside out starting with the very first application
Brittle nails that crack as soon as they grow past the fingertips, and soft, ridged nails after years of gel manicures: this problem affects far more people than you might think. However, a treatment from epres promises to turn things around—not just on the surface, but from the inside out.
Why Do Brittle Nails Get Worse After a Gel Manicure?
Nails, like hair, are composed of keratin organized into tight bonds. Repeated gel manicures, pure acetone, and aging gradually break down these bonds. As a result, the nail plate becomes soft, ridged, and prone to splitting and cracking.
Most conventional hardeners simply create a rigid film on the surface. However, this film does not repair anything deep down: it masks the problem without addressing the cause. As a result, as soon as you stop using it, the weakened nails return to their original condition.
The ePhD Bond Repair treatment, developed by epres, follows the same principle as bond-building hair care products. Its oil-based formula penetrates the nail plate and targets the internal bonds rather than simply “coating” the surface of the nail.
“The goal is to provide true nail repair ‘from the inside out’ by gradually restoring its network of connections.” – epres
A twice-award-winning skincare product developed by a renowned chemist
Behind ePhD is Dr. Eric Pressly, a chemist who helped develop the first bond-building hair care products. The brand highlights its Biodiffusion Technology, which combines just two vegan and biodegradable ingredients—ethyl acetate and diethylhexyl maleate—and contains no thickening polymers.
This oil-based treatment was named “Best Nail Repair Treatment” at the 2026 NewBeauty Beauty Awards. It was also named one of TIME’s Best Inventions of 2025—two accolades that have earned it a solid reputation in the world of nail care.
It remains affordable, at around $20 (approximately €20). This product is specifically designed for brittle, weak nails that split, crack, or discolor after years of gel polish and nail polish remover.
- Voted “Best Nail Repair Treatment 2026” by NewBeauty
- Named one of TIME’s Best Inventions of 2025
- A two-ingredient, vegan, and biodegradable oil-based formula
- Biodiffusion Technology developed by Dr. Eric Pressly
- Sells for around $20 (about €20), without thickening polymers
How to Use ePhD Bond Repair for Brittle Nails
The application process is quick and easy. On clean, dry nails, apply a small drop to each nail, massage the nail plate and cuticles for a few seconds, then let it sit. The product does not need to be rinsed off.
It can be used on its own, as a “natural manicure,” or as a strengthening base coat before applying traditional nail polish or a gel manicure. In this case, simply let it absorb for a few moments before applying your usual base coat, color, and top coat.
During the treatment phase, the brand recommends daily application. Afterward, for maintenance, two to three times a week is sufficient to maintain the results achieved.
When do the results become visible?
According to the brand, soft or ridged nails already look smoother after the first use, especially if they’ve just had gel removed. Daily use for a few days further enhances the effect.
With regular use, damaged nails appear less prone to splitting and cracking. In addition, the nail plate gradually regains a more even surface and becomes more resistant to everyday wear and tear.
What This Treatment Really Does for Weakened Nails
The key strength of ePhD Bond Repair lies in its approach: whereas conventional hardeners act as a protective layer, this treatment targets the internal keratin bonds. The formula contains no thickening polymers, making it lightweight and suitable for all types of brittle nails.
Biodiffusion Technology allows the formula to penetrate the nail plate and work deep within the nail. As a result, nails that have become split, cracked, or discolored after years of gel manicures can gradually regain their strength.
However, this treatment is not a substitute for medical advice. In the event of pain, sudden deformity, or suspected fungal infection, a consultation with a dermatologist is essential before beginning any strengthening treatment.
For brittle nails caused by years of gel manicures and harsh nail polish removers, this restorative treatment offers a different approach from traditional care by directly addressing the structural cause of the brittleness.
