How to Darken Quartz Countertops

Quartz countertops are a popular choice for kitchens and bathrooms because of their durability, aesthetics, and easy maintenance. However, over time quartz can lose its luster and appear faded. If your quartz counters are looking dull, don’t worry – there are a few easy ways to darken them again.

Clean the Surface Thoroughly

Before attempting to darken your quartz, make sure the surface is completely free of dirt, grime, and residues. Clean with a pH-neutral stone cleaner or mild dish soap and warm water. Rinse thoroughly and allow to dry completely. This will help the darkening treatment absorb evenly.

Apply Stone Impregnator

Using a stone impregnator is the easiest way to darken quartz countertops. Impregnators contain penetrating sealers that soak into the porous surface and not only restore the original color, but provide protection against stains and etching.

Here’s how to apply an impregnator:

  • Choose an impregnator formulated for quartz. Read the product instructions carefully before use.
  • Mask off any areas you don’t want treated. Cover sinks, faucets, and backsplashes.
  • Apply the impregnator evenly across the surface using a clean cloth or foam applicator. Allow it to sit for 5-10 minutes.
  • Buff off any excess product with a dry cloth. Multiple thin coats are better than one thick application.
  • Allow the impregnator to cure fully, usually 24-72 hours. Avoid water exposure during this time.

With regular reapplication, an impregnator can keep quartz counters looking like new for years.

Try a Color-Enhancing Sealer

For an even deeper, darker finish, use a color-enhancing sealer made specifically for quartz. These specialty sealers deposit tiny amounts of pigment into the stone for more dramatic results. Follow product instructions closely as application techniques vary.

Color-enhancing sealers last 3-5 years before needing reapplication. They are more permanent than impregnators but will gradually fade over time.

Use Food-Safe Dye

For a permanent color change, consider applying a food-safe penetrating dye. This is best done by a professional stone restoration company. The process involves:

  • Thoroughly cleaning and degreasing the quartz.
  • Applying the dye evenly across the surface and working it into the stone.
  • Removing excess dye before it dries.
  • Applying a sealant on top to lock in the new color.

The dye saturates the entire thickness of the slab for an enduring, non-fading finish. However, this permanent color change can be difficult to reverse.

Frequently Asked Questions About Darkening Quartz Countertops

How long does it take to darken quartz?

  • Impregnators offer instant darkening effects, while color-enhancing sealers take 12-24 hours to fully develop. Permanent dyes require several days for the color to settle in.

Does the darkness last or does it fade out?

  • Impregnators provide temporary darkening that fades over a few months. Color sealers last 3-5 years before needing reapplication. Permanent dyes do not fade.

Can you apply darkening treatments yourself or do you need a pro?

  • Impregnators and color sealers can be applied by homeowners. Permanent dyes require professional equipment and skills for the best outcome.

Will darkening treatments also make the quartz more stain-resistant?

  • Yes, impregnators and color sealers provide protection against stains and etching in addition to darkening the stone. Permanent dyes do not offer stain resistance.

What are the risks of trying to darken quartz yourself?

  • If not done properly, impregnators and sealers can result in splotchy, uneven coloring. Using the wrong product or permanent dye without experience could damage the stone and require a full replacement.


With the right products and techniques, you can safely enhance the color and richness of your quartz countertops. Start with a good clean, follow product instructions closely, and test on a small area first before treating the entire surface. Be aware that darkening results may not be exactly the same across the whole slab due to natural variations. For best results, consider hiring a professional stone restoration company to darken your quartz counters. With a little care and maintenance, you can keep your quartz counters looking like new for many years.