Diamond Strength Nail Hardener
Diamond Strength Nail Hardener
Ends splitting, cracking and peeling!
Noticeably harder, stronger nails instantly.
Grow healthy-looking nails in 5-7 days
Titanium and Micro-Diamond formula instantly bonds to strengthen and seal fragile nail layers
Locks in moisture to nourish and help stop breaking so nails can grow
How to use
Apply 1 coat to bare nails
Use alone or as a base coat
Hazards and Cautions
For external use only, Do Not Ingest. Do not use in case of known allergies to any ingredient. If an allergic reaction develops, you should stop using the product and seek medical advice. Keep out of sight and reach of children.
Important info
Country of Origin: United States
Butyl Acetate, Ethyl Acetate, Alcohol Denat., Nitrocellulose, Isopropyl Alcohol, Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer, Triphenyl Phosphate, Trimethyl Pentanyl Diisobutyrate, Sucrose Acetate Isobutyrate, Etocrylene, Dimethicone, Isopropyl Titanium Triisostearate, Diamond Powder, D&C Violet No. 2 (Ci 60725).
Couldn't load pickup availability
Frequently Asked Questions
Are your products authentic?
Are your products authentic?
Yes! Everything we source is 100% authentic. We only buy from official retailers, trusted boutiques, and verified brand outlets. No middlemen. No replicas. Ever.
How long does delivery take?
How long does delivery take?
We offer 5 to 7 days delivery on in-stock items. For sourced items, delivery times can vary by brand, but we keep you updated every step of the way.
Do you offer returns or exchanges?
Do you offer returns or exchanges?
Since most items are sourced on request, returns and exchanges are not always possible. But if there’s an issue, reach out and we’ll do our best to help.
Are you affiliated with any of the brands you sell?
Are you affiliated with any of the brands you sell?
No. 454 Boutique is an independent personal shopping and sourcing service. We purchase items on your behalf from authorized retailers and verified sources. All brand names and logos belong to their respective owners and are used only for reference.
Our Customers Love Us
"454 is my go-to when it comes to shopping." 🛍️
"I highly recommend 454 Boutique. Their customer service is second to none." ❤️
"100% genuine and top-quality products every time." ✅

