Why Do Cosmetic Tubes Crack or Deform?

A cosmetic squeeze tube is designed to be repeatedly squeezed, opened and stored during daily use.

However, some tubes may develop:

• Cracks around the shoulder

• Whitening marks after squeezing

• Permanent deformation

• Poor shape recovery

• Splitting near the tail seal

• Surface damage after repeated use

These issues are usually related to the combination of:

• Tube material

• Wall thickness

• Structure design

• Formula compatibility

• Squeezing force

• Storage and transportation conditions

A durable package requires balance between flexibility, strength and recovery performance.

Common Areas Where Cosmetic Tubes Fail

Identifying the failure location is the first step toward finding the correct solution.

1. Material Selection Affects Tube Durability

The material of a cosmetic tube directly influences flexibility, strength and recovery.

Common cosmetic tube materials include:

• PE

• PCR PE

• ABL

• PBL

Each material has different characteristics.

The best material depends on the formula, product positioning and required user experience.

A very soft tube may feel comfortable but may not provide enough structural support for certain applications.

A very rigid tube may protect the product but create a less comfortable squeezing experience.

2. Wall Thickness Influences Strength and Feel

Tube wall thickness is another important factor affecting durability.

If the tube wall is too thin:

• The tube may deform easily

• Recovery performance may decrease

• Stress concentration becomes higher

• Cracking risk may increase

If the tube wall is too thick:

• More squeezing force may be required

• User experience may become less comfortable

• Material consumption increases

A suitable wall thickness should balance:

• Squeezability

• Shape recovery

• Product protection

• Manufacturing stability

3. Tube Shoulder Is a High-Stress Area

The shoulder connects the tube body and neck.

During squeezing, this area experiences repeated mechanical stress.

This makes the shoulder one of the most important areas when evaluating cosmetic tube durability.

Potential problems include:

• Sharp structural transitions

• Uneven material distribution

• Excessive squeezing pressure

• Inappropriate shoulder design

A well-designed shoulder can distribute stress more evenly and reduce cracking risk.

4. Repeated Squeezing Can Cause Stress Fatigue

Unlike rigid packaging, cosmetic tubes are designed to deform during use.

However, repeated deformation creates mechanical fatigue over time.

A tube may experience hundreds of squeezing cycles during its service life.

Possible results include:

• Small cracks

• Whitening marks

• Reduced elasticity

• Permanent deformation

This is why packaging evaluation should consider not only the first squeeze, but the entire product usage cycle.

5. Formula Compatibility Can Affect Tube Performance

The formula inside the tube can influence material performance.

Some ingredients may interact with packaging materials over time.

Potential concerns include:

• Oils

• Solvents

• Strong active ingredients

• Alcohol-based formulas

• Essential oils

Possible effects:

• Material softening

• Reduced strength

• Surface changes

• Increased cracking risk

A tube that performs well with one formula may not perform identically with another.

Therefore, compatibility testing is important before mass production.

6. Why Do Tubes Become White After Squeezing?

One common question from buyers is:

“Why does the tube become white after squeezing?”

This phenomenon is often related to material stress.

When plastic is repeatedly stretched or bent, internal stress can change the way light passes through the material.

The result may appear as:

• White marks

• Stress lines

• Color changes around squeezed areas

This does not always mean the tube has failed.

However, excessive whitening combined with reduced strength may indicate that the material or structure is not suitable.

7. Transportation Can Damage Tube Structure

Cosmetic tubes may experience different forces before reaching consumers.

During international transportation, packaging may face:

• Compression

• Vibration

• Temperature changes

• Long-term stacking pressure

Potential problems include:

• Deformed tubes

• Damaged shoulders

• Cracked closures

• Weakening of seals

For export projects, filled-package transportation testing is especially important.

How to Improve Cosmetic Tube Durability

Select the Right Material

Choose materials based on:

• Formula characteristics

• Barrier requirements

• Brand positioning

• User experience

Optimize Tube Structure

Consider:

• Tube diameter

• Wall thickness

• Shoulder design

• Closure compatibility

• Tail seal structure

Test With Real Formula

Testing should use the actual commercial formula because different ingredients may affect material behavior.

Evaluate Real Usage Conditions

Consider:

• Number of squeezes

• Storage environment

• Transportation conditions

• Consumer usage habits

Cosmetic Tube Durability Testing Checklist

How Buyers Can Avoid Tube Cracking Problems

Before confirming production, buyers should provide:

• Formula information

• Target capacity

• Expected usage frequency

• Required softness level

• Transportation conditions

• Decoration requirements

A tube designed only according to appearance may not deliver the expected user experience.

The best packaging balances:

• Appearance

• Function

• Durability

• Manufacturing reliability

JIIHO Cosmetic Tube Durability Solutions

As a professional cosmetic tube manufacturer and supplier, JIIHO evaluates material selection, tube structure, formula compatibility and production conditions to create reliable packaging solutions.

A high-quality cosmetic tube should not only look attractive but also maintain performance from filling to final consumer use.

Contact JIIHO to develop durable cosmetic tube packaging for your next project.