How to Fix a Dull Spot on Quartz Countertop

Clean with Mild Soap and Water

The first step is to try cleaning the dull area with mild soap and warm water. Mix a few drops of dish soap or hand soap into a bowl of warm water. Use a soft cloth or sponge to gently clean the affected area, rinse well and dry. This may be enough to remove dirt, grime or residue that is causing the dullness. Avoid using abrasive cleaners or scrubbing too hard, as this could scratch the quartz.

Use a Quartz Polish or Cleaner

If regular soap and water does not restore the luster, the next step is to use a specially formulated quartz countertop cleaner or polish. Look for a product that states it is safe for use on quartz/engineered stone. Apply a small amount to the dull spot according to the product directions and buff with a soft cloth. Repeat as needed until the area looks shiny and glossy again. Some popular options are Quartz Countertop Polish by Black Diamond and HOPE’S Perfect Countertop.

Try a Baking Soda Paste

For stubborn dull spots, make a paste of baking soda and water. Mix 2 parts baking soda with 1 part water to form a spreadable paste. Gently rub the paste onto the affected area using a soft cloth or sponge. Let it sit for a few minutes before rinsing and drying thoroughly. Baking soda has mild abrasive qualities to help lift dirt while being gentle enough not to scratch the quartz.

Use a Magic Eraser

Magic erasers, like Mr. Clean Magic Eraser, can also help fix dull spots on quartz. These melamine foam cleaning pads have an abrasive texture that buffs off dirt, stains and dullness. Dip the magic eraser in water, then wring out thoroughly so it is just slightly damp. Gently rub the spot in circular motions. The eraser should restore shine and gloss. Be cautious not to rub too hard or for too long to avoid damaging the surface.

Mineral Oil Application

Applying a very small amount of mineral oil can also help rejuvenate dull looking quartz countertops. Use a microfiber cloth to rub a drop or two of mineral oil over the affected area. Let it sit for 10 minutes before wiping away any excess. The oil seeps into pores and brings back the shine. Be careful not to use too much and avoid oiling areas near food prep.

Flour Powder and Lemon Juice Paste

For hard water spots that cause dullness, try making a paste with flour powder and lemon juice. Mix 2-3 tablespoons flour powder with enough lemon juice to form a paste. Use a soft cloth to rub the paste onto the dull spots. Let it sit for an hour before rinsing and drying well. The citric acid in lemon helps dissolve mineral deposits while the flour acts as a gentle abrasive.

Call a Professional Refinishing Service

If you are unable to remove dull spots and stains that are affecting the overall look of your countertop, consider calling a professional quartz refinishing company. They have commercial grade polishing compounds and equipment to re-hone and shine the surface. This restores the glossy, smooth finish. Refinishing is an inexpensive alternative to replacing the countertop.

Prevent Dullness in the First Place

The best way to keep your quartz countertops shining is by providing proper daily and routine care. Always use cutting boards, trivets and hot pads to protect from scratches, burns, and stains. Clean up spills promptly using a damp microfiber cloth. Avoid abrasive cleansers and sponges. Clean regularly with mild soap and water. Use a granite/quartz cleaner weekly for maintenance. Re-seal every 1-2 years. With proper care, your quartz countertop can maintain its lustrous appearance for many years.

FAQs About Fixing Dull Spots on Quartz Countertops

What causes dull spots on quartz?

Some common causes of dull spots on quartz countertops include:

  • Accumulation of dirt, grease and grime in porous areas
  • Hard water spotting and mineral deposits
  • Not cleaning up spills promptly leading to staining
  • Using abrasive cleaners or scrubs that wear down the finish
  • Excessive heat or scorching that damages the surface

Can I use vinegar to restore shine?

Vinegar is too acidic for use on quartz countertops. It can dull the finish rather than restoring shine. Avoid vinegar or any cleaners with acids like lemon, lime or orange. Stick to pH-neutral quartz cleaners and gentle options like baking soda paste instead.

How can I make my own quartz polish?

An easy homemade polish is:

  • 1⁄4 cup olive oil
  • 1⁄4 cup distilled white vinegar
  • 1 tsp clear dish soap
    Mix the ingredients in a spray bottle, shake well and spray a small amount onto a soft cloth to polish dull quartz. Avoid getting vinegar on the countertop as it can etch the surface.

What are other quartz-safe DIY cleaning options?

Some other DIY solutions that are safe for quartz include:

  • Dish soap and warm water
  • Hydrogen peroxide mixed with baking soda
  • Rubbing alcohol to disinfect
  • Diluted ammonia to remove dried spills
    Always avoid abrasive cleaners, citrus acids, bathroom cleaners, etc. which can damage quartz.

Can dullness be buffed out or does it require a professional?

Depending on the severity, you may be able to buff out dullness at home using quartz polish, baking soda paste, or magic eraser. Use gentle pressure in circular motions. For extensive dullness or damage that affects a large area, professional refinishing or restoration may be needed to renew the glossy finish.

How often should quartz countertops be professionally restored?

Quartz countertops typically only need professional restoration services every 5-10 years. Annual sealing helps maintain the finish. With proper daily and weekly cleaning, quartz can maintain its factory sheen for years before needing resurfacing. Harsh cleaners and damage can shorten the time between professional treatments.


Dull spots on quartz countertops are usually just a surface-level issue that can be fixed with regular cleaning methods like soap and water, specialized quartz cleaners, baking soda paste, or magic erasers. For hard water stains, try a flour and lemon juice mix. Mineral oil can also help revive shine. Avoid abrasive scrubbing and acids. Professional restoration services are an option for extensive dullness. With proper routine care, quartz countertops can maintain their lustrous, glossy finish for many years before needing professional polishing or refinishing work. Consistent maintenance is key to keeping quartz surfaces sparkling.