Stop Nail Biting in Its Tracks - Custom Covers with Bitterant for Polished, Damage-Free Hands
Nail-Biter Stoppers™ (NBS™) is your go-to for smarter nail care. We make custom covers-five pieces, thumb to pinky - with bitterant integration to discourage biting and keep your nails looking great.
To give you a quick, invisible fix: custom nail covers that go on easy, stay put, and quietly discourage biting-so your nails look longer, cleaner, and way less chewed-up. All while feeling and appearing totally natural.
Syed I. Hussain, Founder & Inventor, created Nail-Biter Stoppers™ (NBS™) to help people overcome nail-biting (onychophagia) by combining a durable protective nail cover with a safe bitterant coating. His goal is to break the habit, protect and heal damaged nails, and restore confidence through healthier, better-looking hands.
Aleksandar Lazic, Chief Design Engineer & Co-Inventor, contributed his expertise in product design and engineering to make the covers comfortable, customizable, and effective.
JTMS NBS operates as a venture under the Jacks of All Trades & Masters of Some Master LLC, benefiting from its ethical framework and support. Plans for establishing it as a separate series LLC are under consideration, pending product development and market success.
Onychophagia, commonly referred to as nail-biting, is a prevalent habit that results in shortened, uneven nails. It is estimated to affect a significant portion of the population across various demographics.
The Nail Biting Challenge
This habit often leads to aesthetic concerns, including irregular nail length and appearance. Addressing it can improve overall hand presentation and grooming standards.

Nail-biting affects more than just appearance, impacting health, psychology, and daily life as shown in the table above.

This table shows the prevalence of onychophagia across regions, with percentage ranges and estimated millions affected, highlighting its global impact.
Nail-Biter Stoppers™
Premium protective packaging engineered for durability and discretion.
$49.99 + Shipping
Includes: 20 universal-fit covers, nail glue (adhesive), and other application tools - details in pay-link.
Plus: 1 month free unlimited custom covers - our team will work with you for perfect fits.
Refills: $29.99 (+ shipping) per set anytime after.
Step 1: Nail Preparation
Trim and file nails using the NBS kit's cutter and file for a smooth base.
Wipe fingertips with alcohol swab; let dry 1–2 minutes.
Safety: Adhesive is toxic if ingested and may damage surfaces—protect workspace with paper towels.
Proceed to Step 2 when ready.
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