Every fix, compared.
What matters is when it acts, and whether you have to notice first.
| Fix | When it acts | You have to notice? | Our read |
|---|---|---|---|
| Bitter polish | Finger already in your mouth | No, but it comes late | Dermatologists suggest it.1 You get used to the taste. Nails only. |
| Gel or acrylic | Covers the nail | No | Protects the nail. It doesn't change the habit. Nails only. |
| Gloves, patches, hats | Blocks the spot | You have to put them on | Good for known hard hours, like bedtime. |
| Fidget toys | When you reach for one | Yes | Keeping hands busy helps,2 if you remember to reach for it. |
| Logging apps | After it happened | Yes | If you have to log it, you've already noticed. |
| Habit reversal with a therapist | Trains you to catch it | Yes, that's the skill | The most studied method.3 It takes a clinician and practice. |
| Shock band (Pavlok) | When you press the button | Yes | For nail biting, you press it yourself.4 |
| Bracelet you train (HabitAware Keen) | When it recognizes what you trained | No, once trained | The closest thing to us. You train the band first.5 |
| Habitloop | The moment it starts | No | Nothing to press, nothing to remember. Available for pre-order; detection is a design target until it ships. |
Use more than one.
A band doesn't replace a therapist, and polish doesn't rule out a band. Pick the fix for the moment you lose: the hours you know are hard, and the ones you don't notice at all.
If a habit is causing you injury or distress, talk to a doctor or therapist. The IOCDF directory lists clinicians.
Sources
- American Academy of Dermatology, How to stop biting your nails.
- Ghanizadeh et al., Iran J Psychiatry 8(2), 2013. Children aged 6 to 17; habit reversal did better long term.
- TLC Foundation for Body-Focused Repetitive Behaviors, Expert Consensus Treatment Guidelines, 2016.
- Pavlok product pages, read November 2026.
- HabitAware product pages, read November 2026.