How to Clean the Inside Glass of a Picture Frame

Even a beautifully framed picture can lose its appeal when dust, specks, or fingerprints sneak under the glass. Whether you’re framing a new photo or refreshing an old one, knowing how to properly clean inside the glass is a skill every frame owner should learn.

This step-by-step guide will walk you through how to safely disassemble your picture frame, clean the interior surfaces, and prevent dust from returning.

Why Dust Appears Inside Picture Frames

Dust can work its way into a frame over time. Changes in humidity, static electricity, or small gaps around the frame edges can let particles settle between the glass and the artwork. That’s why it’s important to know how to clean the inside glass properly, without damaging your photo, matboard, or frame in the process.

What You’ll Need

• Soft microfiber cloths
• Glass cleaner (ammonia free) or a 50/50 mix of water and vinegar
• A can of compressed air (or air duster)
• Soft brush or anti-static brush
• Soft gloves (optional, to avoid fingerprints)
• Cotton swabs (for corners or residue)
• Isopropyl alcohol (for sticky marks – optional)
• Frame sealing tape (optional for resealing)

Step 1: Carefully Disassemble the Frame

• Place the frame face down on a clean towel or soft surface.
• Release or bend open the metal flip tabs (or remove points or staples).
• Remove the backing board, mat board, photo or artwork, and glass, keeping them in order.
• If the frame has a tape seal, gently peel this away before opening.

Step 2: Clean the Glass (Both Sides)

• Gently brush away loose dust with a soft brush or dry microfiber cloth.
• Lightly spray a glass cleaner or a 50/50 vinegar and distilled water solution onto a clean cloth (never directly onto the glass).
• Wipe in circular motions to remove fingerprints or haze. Buff with a dry cloth for a streak-free shine.
• For stubborn marks or adhesive residue, use a small amount of isopropyl alcohol on a cotton swab.

Step 3: Clean the Frame Interior

• Dust the inside edges of the frame using a brush or cloth.
• Use a can of compressed air to remove fine dust from tight corners and grooves.

Step 4: Clean the Mat Board and Artwork (If Needed)

• If your photo or artwork has loose dust, gently blow it away with compressed air or use a very soft anti-static brush.
• Avoid any moisture or cleaner on the paper surface itself.
• If you matboard has any smudges or marks, you can try to remove these using a soft, white eraser. 

Step 5: Reassemble Dust-Free

• Before reassembling, do a final check for dust or lint on all components.
• Stack the components back in place: glass, mat board (if used), artwork, and backing.
• Press the backing in place and secure the flip tabs, points or fasteners.

Optional: Seal the Frame to Prevent Dust

• Use framing tape around the back edges to help seal the frame and prevent future dust entry. See our helpful video below.
• Make sure the frame is stored or displayed away from excessive airflow, humidity, or static build-up.

Helpful Tips

• Use soft gloves to avoid fingerprints when handling glass or photos.
• Never spray cleaner directly onto the glass, as moisture can seep into the frame or matboard.
• Work in a dust-free environment with minimal airflow while reassembling.
• Store unused frames in a flat, wrapped condition in a clean space to avoid dust build-up.

Keep Your Frames Clear, Clean, and Dust-Free

A little care goes a long way. By properly disassembling, cleaning, and reassembling your picture frame, you can remove distracting specks and dust, and keep your display looking pristine. Whether it’s a cherished photo, certificate, or artwork, clean glass keeps the focus on what matters most - the image and memories inside.

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