Sally Hansen Diamond Strength® Instant Nail Hardener Treatment, 0.45 fl oz
Sally Hansen Diamond Strength® Instant Nail Hardener Treatment, 0.45 fl oz
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Sally Hansen Diamond Strength® Instant Nail Hardener Treatment, 0.45 fl oz

Key item features

Sally Hansen Diamond Strength® Instant Nail Hardener, 0.45 fl oz

  • Strengthening Formula - Protect nails with a titanium formula that instantly bonds and strengthens nail layers
  • 10 Day Protection - Provides up to 10 days of protection against splitting nails
  • Instant Results - Have beautiful nails at your fingertips as soon as you apply one coat
Current price is $6.74$14.98/fl oz
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Customer ratings & reviews

4.3 out of 5 stars
stars2,367 ratings2,233 reviews
How item rating is calculated
  1. 5 stars57% (1,355)
  2. 4 stars24% (579)
  3. 3 stars13% (297)
  4. 2 stars3% (77)
  5. 1 star2% (59)

Reviews summary

Pros

  • : Application process is effortless and requires minimal effort.
  • : Provides a shiny base or top coat finish.
  • : Offers a wide range of bright shades.
  • : Provides hard nail strength.
  • : This product has a lower price point compared to similar products.

Neutral

  • : Can be long-lasting, but may chip easily depending on usage.
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Showing 1-3 of 2,233 reviews

May 22, 2026
Yvonne
Top Reviewer
5 out of 5 stars review

Verified Purchase

Sally Hansen Diamond Strength Hard as Nails!!Have used this product for YEARS! I always use, never a problem, %26 does exactly what it says it will do! I do not use any other brand!

Helpful?4B9D39KB5J0J512983032
Nov 11, 2025
Gypsy
Top Reviewer
5 out of 5 stars review

Verified Purchase

Best hardener I’ve ever used.

Helpful?4B9D39KB5J0J512983032
Oct 9, 2020
Chris
5 out of 5 stars review

Verified Purchase

Great Stuff!

This is really great stuff-especially if you keep your nails short. It has crystals in it to provide support to your nails, the shine is AMAZING!

Helpful?4B9D39KB5J0J512983032