Why Do My Nails Keep Splitting and Peeling? How to Strengthen Brittle Nails

Your nails peel in layers, split at the edges or snap just as they’ve grown a little. You might have tried strengthening polishes, a break from gels, or simply keeping them short and hoping. Here’s what’s actually going on, and what helps.

Brittle nails are one of the most common concerns we see, particularly in people who regularly wear gel polish, BIAB or acrylics, and in anyone whose hands are often in water. The good news is that brittleness usually means the nail is dry and thinned, rather than “weak” in a way you can’t change, and that’s very fixable.

1Why Nails Become Brittle

Your nail is made of many thin layers of keratin, held together by a small amount of moisture and natural oils. When those layers dry out or get thinned, they stop moving together. The nail becomes rigid, the layers start to separate (that’s the peeling), and the free edge splits instead of flexing.

A brittle nail usually isn’t lacking strength. It’s lacking flexibility, and flexibility is something you can restore.

2The Most Common Causes

• Repeated buffing, filing, soaking and removal of gels, BIAB or acrylics
• Reapplying salon systems without a break in between
• Frequent hand washing, hand sanitiser and cleaning chemicals
• Long periods in water: washing up, cleaning, swimming, hairdressing or healthcare work
• Hormonal and age-related changes, which tend to make nails drier over time
• Gaps in nutrition, particularly not enough protein

3What We See When the Polish Comes Off

The most common mistake is to respond by adding more product: another set of gels to “protect” the nail, or buffing the surface smooth. It looks better for a while, but it keeps the cycle going. Brittle nails need conditioning, not covering.

4How to Strengthen Brittle Nails

This is the approach in our Nail Strength Plan, from Chapter 6 of our free guide, The Nail Cure.

Step 1: Stop the damage cycle

• ✓Pause gels, BIAB, acrylics and polish while the nails recover.
• ✓No aggressive buffing or thinning. File gently, in one direction, and only to smooth a snag.
• ✓Keep nails short while they regrow, so there’s less leverage on the free edge.
• ✓Wear gloves for cleaning and washing up, and avoid long soaks.
• ✓Dry your hands properly after washing, and use a hand moisturiser when your skin feels dry.

Step 2: Condition with Myrrhage® every evening

Myrrhage® Nail Serum is the core of this plan. It’s a plant-based serum that conditions dry, over-processed nails so they feel more flexible and look smoother, and a more flexible nail is less likely to split and peel. Massage it into the nails and cuticles once or twice a day. Consistency matters more than quantity.

Step 3: Protect with Formula 3® in the morning

Formula 3® is a penetrating oil that conditions and revitalises the nail. Applied once a day to the nail plate, the free edge and the cuticle area, it helps protect the nail fold and keeps the nail supple. (It’s also an antifungal, so if you notice thickening or yellowing, use it twice a day and read our fungal nail article.)

Step 4: Feed the new nail

A nail can only be as strong as the materials your body has to build it with. Include protein at every meal. If you want a top-up, one good multivitamin covers the basics; Chapter 7 of the guide explains the simple approach we recommend.

5Brittle Toenails

Toenails can become brittle too, most often after a fungal infection or years of pressure from shoes that don’t leave enough room. Every step can give the nail a small knock, and over time that repeated stress makes it thick, ridged or prone to splitting.

A quick shoe-fit check you can do at home

Do it later in the day, when your feet are at their largest, and always standing, not sitting. Feet lengthen and spread when they take your weight.

• ✓Stand up straight with your heel settled into the back of the shoe.
• ✓Feel where your longest toe sits. You want about a finger’s width (roughly 1 cm) of space in front of it.
• ✓Can’t bend down comfortably? If the footbed lifts out, put it flat on the floor and stand on it with your heel in place. If there’s no visible insole in front of your longest toe, the shoe is probably too short.
• ✓Length isn’t everything. Check the toe box is wide and deep enough that your toes aren’t squeezed from the sides or pressed from above.

This is a screening check, not a full fitting. Footbeds don’t always match the inside of the shoe exactly, so if you’re unsure, a professional fitting is worthwhile.

The same Nail Strength Plan applies to toenails. They just take longer: a big toenail takes 12–18 months to grow out completely.

6What to Expect, and When

When	What you can expect
2–4 weeks	Nails feel less dry and fragile.
6–8 weeks	Smoother new growth is visible at the base.
3–4 months	A clear improvement in strength.
4–6 months	Most of the weakened fingernail has been replaced.

7Mistakes That Keep Nails Brittle

• Going straight back to gels as soon as the nails look a little better.
• Buffing ridges and peeling layers smooth, which thins the nail further.
• Peeling off polish or gel rather than removing it properly.
• Washing up and cleaning without gloves.
• Using products now and then. Conditioning works through daily consistency.

You may also find our articles Why Is My Nail Lifting? and Why Is My Fungal Nail Infection Not Going Away? helpful.