How Big is a 4oz Plastic Cream Jar? Everything Cosmetic Brands Need to Know

Finding the right jar size can be confusing. Many cosmetic brands underestimate how much product a 4oz jar can hold. This leads to over-ordering or poor packaging choices. In this post, I’ll clarify the actual size of a 4oz plastic jar and its best applications.

A 4oz plastic jar typically measures around 2.2 x 2.2 x 2.6 inches (5.5 x 5.5 x 6.5 cm) and holds approximately 120ml. Depending on design, variations exist: some jars are 2.69 inches tall with a 2.81-inch diameter. These jars are widely used in cosmetics for creams, balms, and body scrubs due to their practical size.

Now that we understand the basic dimensions, let’s explore how this size compares, where it’s used, and what packaging buyers should consider before choosing 4oz jars.

What Size is a 4oz Jar Exactly?

When suppliers list a jar as “4oz,” they are referring to its fluid capacity rather than its exact physical size. On average, a 4oz plastic jar measures between 2.2 to 2.9 inches in diameter and 1.7 to 2.7 inches in height. Depending on the manufacturer, the dimensions can slightly vary:

• 2 x 2.2 x 2.6 inches (5.5 x 5.5 x 6.5 cm) – a compact straight-sided style.
• 38 inches tall and 2.34 inches in diameter – a standard PET single-wall jar.
• 69 inches tall, 2.81 inches diameter – a squatter, wider version.

In milliliters, 4oz = 118–120 ml, which is often rounded up to 120 ml in cosmetics.

For buyers, this means you shouldn’t assume every 4oz jar looks the same. Always check product dimensions before ordering packaging in bulk.

How Large is a 4oz Container in Real Use?

Numbers alone don’t always help visualize the size. So let’s look at what cosmetic products typically fit into a 4oz plastic container:

• Face Creams – 4oz is generous enough for 1–2 months of daily use.
• Body Butters & Scrubs – the wide-mouth design makes scooping easy.
• Hair Masks – a perfect travel-size or sample size for salons.
• Balms & Gels – mid-size portion, not too small but still portable.

For reference, a 4oz jar is about the size of a small fist or a short coffee cup. Customers often perceive it as a “substantial but not bulky” packaging option.

How Does a 4oz Plastic Jar Compare to 6oz and 8oz Options?

Many cosmetic companies debate between 4oz, 6oz, and 8oz plastic containers. Here’s a quick comparison:

• 4oz Jar (120ml) – Best for mid-sized creams, trial packs, or premium samples. Portable and cost-efficient.
• 6oz Jar (180ml) – Slightly larger, ideal for thicker products like clay masks or sugar scrubs where customers expect more product.
• 8oz Jar (240ml) – Considered “full-size” in many product lines, perfect for body butters, bath salts, or family-use products.

By offering 4oz alongside 6oz and 8oz, brands can create tiered product sizes, appealing to different customer needs.

Why Cosmetic Brands Choose 4oz Jars for Packaging

So why do so many cosmetic manufacturers stick to 4oz packaging? Here are the key advantages:

1. Consumer-Friendly Size – Customers feel they are getting enough product without committing to an oversized jar.
2. Cost-Effective for Brands – Less product means lower production costs while still maintaining a premium look.
3. Travel-Friendly – Compact enough for handbags or carry-on luggage.
4. Retail Shelf Appeal – Neat, uniform display; not overwhelming compared to larger jars.
5. Flexibility for Product Lines – Brands can test new formulations in 4oz jars before scaling to bigger packages.

4oz Plastic Jars with Lids: Common Types & Styles

When shopping for 4oz plastic jars with lids, you’ll find several variations designed for cosmetics:

• Straight-Sided Jars – Clean, modern, easy to label.
• Double-Wall Jars – Extra insulation and a premium feel for skincare.
• Wide-Mouth Jars – Convenient for scooping thicker products like scrubs.
• Clear PET Jars – Lightweight, shatterproof, and transparent for product visibility.
• Colored or Frosted Jars – Ideal for branding or protecting light-sensitive formulas.

Lids also vary: smooth, ribbed, metallic, or disc closures. Choosing the right lid can enhance product aesthetics and functionality.

Where to Buy 4oz Plastic Jars Wholesale

For packaging buyers, finding 4oz plastic jars with lids wholesale is key to lowering costs. Here are typical sourcing options:

• Packaging Distributors – Companies like Berlin Packaging, Burch Bottle, or TricorBraun offer bulk pricing.
• Specialized Cosmetic Suppliers – Vendors focusing on skincare packaging often provide customizations like color or labeling.
• Online Wholesale Platforms – Amazon, Alibaba, and Uline provide smaller MOQ options for startups.
• Local Suppliers – Searching for “4 oz plastic containers with lids near me” can save on shipping costs.

Pro tip: Always request samples before placing large orders to confirm jar quality, lid fit, and overall appearance.

How Big is a 4oz Plastic Jar with Lid vs. Without?

It’s easy to forget that the lid adds extra height to the jar. While the body might be 2.6 inches tall, a screw-on lid can add another 0.2–0.5 inches.

This matters when:

• Designing retail packaging boxes.
• Calculating shelf space.
• Planning product photography.

Some cosmetic brands even choose low-profile lids to keep the jar compact and stylish.

4oz Plastic Containers vs. Glass Alternatives

Plastic isn’t the only choice. Many buyers compare plastic jars vs. glass jars for cosmetics:

• Plastic Jars – Lightweight, shatterproof, lower shipping costs. Best for body care products where portability matters.
• Glass Jars – Premium feel, eco-friendly perception, often used for luxury skincare. Heavier and more fragile, but elevate brand image.

For mass-market cosmetic packaging, plastic 4oz jars dominate because they balance cost, safety, and functionality.

Final Thoughts

A 4oz plastic jar may seem small, but it’s a versatile size for cosmetics. From creams to scrubs, it balances convenience and value. If you’re sourcing packaging, consider product type, closure style, and target market. Ready to explore 4oz options for your brand?