Compound vs. Polish vs. Glaze: When to Use Each

Quick Answer

Compound is an aggressive abrasive for removing deep scratches and heavy defects. Polish is a finer abrasive for refining the surface and removing light swirls. Glaze is a non-abrasive filler that hides minor imperfections and adds gloss temporarily. Use compound for heavy correction, polish for final finishing, and glaze for a quick shine boost before a show or sale.

If you're new to machine polishing, the lineup of compounds, polishes, and glazes can be confusing. Each serves a different purpose in the paint correction process, and using the wrong one can waste time or even damage your clear coat. Understanding their differences is key to achieving a flawless finish.

In this guide, we break down what each product does, when to use it, and how to choose the right one for your paint's condition. Whether you're tackling deep scratches or just want a quick gloss enhancement, you'll know exactly which product to grab.

What Is a Compound?

A compound is the most abrasive paint correction product. It's designed to remove deep scratches, heavy oxidation, and other significant paint defects. Compounds use larger abrasive particles that cut through the clear coat quickly, leveling the surface to remove imperfections.

Because compounds are aggressive, they leave behind a hazy finish that requires a finer polish to restore gloss. They are typically used with a machine polisher and a cutting pad. For severe defects like deep water spots or scratches, a compound is your first step.

• Use a compound only when you have significant paint defects that lighter products can't remove.

What Is a Polish?

A polish is a finer abrasive that refines the surface after compounding or removes light swirls and scratches on its own. Polishes use smaller abrasive particles that smooth the paint and bring out its natural gloss. They are essential for achieving a mirror-like finish.

Some polishes, like the InSynchro V45 Supreme Finish Polish, feature adaptive micro-abrasives that shrink during application, allowing for effective correction in fewer passes while remaining gentle on the paint. Polishes are versatile and can be used with a polishing pad on a machine or by hand for light defects.

• Polish is your go-to for removing light swirl marks and preparing the paint for wax or sealant.

What Is a Glaze?

A glaze is a non-abrasive product that fills in minor imperfections and adds a temporary layer of gloss and depth. It doesn't remove any paint; instead, it masks light swirls and spider webs, making the surface look perfect for a short time.

Glazes are often used before a show, a sale, or to enhance the final look after polishing. They are not a substitute for proper correction and will wash off or fade quickly. If you need a quick shine boost without the effort of polishing, a glaze is a convenient option.

• Glazes are ideal for a quick detail before an event, but they don't provide long-lasting protection.

Trade-offs at a Glance

• Compound: Aggressive cutting: Removes deep defects but leaves a hazy finish that requires polishing. Use only when necessary; always follow with a polish.
• Polish: Fine finishing: Smooths and adds gloss but cannot remove deep scratches. Essential after compounding or for light swirls; use as the final correction step.
• Glaze: Temporary filler: Hides imperfections and adds gloss but offers no correction or durability. Best for short-term enhancement, not long-term paint care.

Products That Fit the Job

• V32 Paint Correction Extreme Compound: V32 Optical Grade Extreme Compound is our most abrasive compound and the first in the V-series. It eliminates deep scratches, heavy paint defects, and imperfections from super-hard paint finishes - setting up your vehicle for superior final polishing results. When you have deep scratches or hard paint that needs aggressive cutting, V32 is formulated to handle the toughest jobs before you move to a finer polish.
• InSynchro V45 Supreme Finish Polish: InSynchro V45 is a game-changing precision finishing polish designed for removing light scratches and swirls with ease. Featuring innovative adaptive micro-abrasives, these polishing particles shrink in size during application, enabling effective corrections in fewer passes while remaining gentle on your paintwork. After compounding, V45 refines the surface to a flawless, mirror-smooth finish, saving you time while protecting your paint's integrity.

Which Should You Choose?

Best for

• Compound: Vehicles with deep scratches, heavy oxidation, or super-hard paint that needs aggressive correction.
• Polish: Cars with light swirl marks or as a finishing step after compounding to achieve a high-gloss, smooth finish.
• Glaze: Show cars or vehicles about to be sold, where a quick, temporary gloss boost is desired.

Not for

• Compound: Daily maintenance or light swirls, as it removes too much clear coat.
• Polish: Deep scratches that require compounding first.
• Glaze: Long-term protection or actual defect removal, as it washes off and does not correct.

Choosing between compound, polish, and glaze depends on the condition of your paint and your goal. For serious defects, start with a compound like V32, refine with a polish like V45, and use a glaze only for a temporary shine boost. Always test on a small area first and follow with proper protection to keep your finish looking its best.