What Is Petroleum Jelly and How Does It Work?

Petroleum jelly is one of the most widely recognised and versatile ingredients used in skincare, personal care and pharmaceutical formulations. Known for its smooth texture and protective properties, it can be found in everything from moisturising products and lip care formulations to creams, lotions and topical ointments.

But what is petroleum jelly, and why has it become such a valuable ingredient across so many applications?

Also known as petrolatum, petroleum jelly is a highly refined, semi-solid mixture of hydrocarbons. Its main function is to create a protective barrier on the surface of the skin, helping to reduce moisture loss and protect against external factors.

Unlike ingredients that add water directly to a formulation, petroleum jelly works mainly by helping to retain moisture that is already present. This ability to form an effective protective layer is one of the reasons it remains an important ingredient for cosmetic, pharmaceutical and personal care manufacturers.

What Is Petroleum Jelly?

Petroleum jelly, also known as petrolatum, is a smooth, semi-solid material produced through the refining and purification of petroleum-derived raw materials.

The finished product typically has a soft, jelly-like consistency that makes it easy to spread and incorporate into a wide range of formulations.

Depending on its grade, quality and intended application, petroleum jelly may be used in:

• Skincare products
• Creams and lotions
• Lip care formulations
• Balms
• Cosmetic products
• Topical treatments
• Pharmaceutical ointments
• Other personal care products

Kerax supplies white petroleum jelly for pharmaceutical and personal care applications, including skincare products, ointments and topical formulations.

Its versatility comes from a combination of useful characteristics including its smooth consistency, protective qualities and compatibility with many different types of product formulation.

How Does Petroleum Jelly Work?

To understand how petroleum jelly works, it is helpful to look at the natural behaviour of moisture in the skin.

Water is continually lost from the surface of the skin through evaporation. When the skin barrier is dry, damaged or exposed to harsh environmental conditions, moisture loss may become more noticeable.

Petroleum jelly works primarily as an occlusive ingredient.

This means that it creates a thin protective layer over the surface of the skin. The layer helps slow down the evaporation of water, allowing the skin to retain more of its existing moisture.

Rather than directly adding water to the skin, petroleum jelly helps reduce moisture loss. This is why it is commonly included in formulations designed to support dry or exposed skin.

Research into occlusive moisturisers explains that oily substances applied to the surface can reduce evaporative water loss and help support hydration of the outer skin layer.

This simple but effective mechanism is one of the main reasons petroleum jelly is used so extensively in skincare and topical formulations.

Does Petroleum Jelly Moisturise the Skin?

Petroleum jelly is often described as a moisturising ingredient, but the way it works is slightly different from ingredients that actively attract or supply water.

Moisturising formulations commonly combine different types of ingredients, including:

Humectants, which help attract and hold water.

Emollients, which help improve the smoothness and feel of the skin.

Occlusives, which create a surface barrier that helps reduce moisture loss.

Petroleum jelly is best known for its role as an occlusive.

By helping to seal moisture into the skin, it can support a softer and more comfortable feel. This makes it particularly useful in formulations intended for dry areas of the skin or products designed to create a protective barrier.

Its effectiveness as an occlusive ingredient has helped make petrolatum a widely used component of moisturisers, creams, lotions and other personal care products.

 

What Is White Petroleum Jelly?

White petroleum jelly is a highly refined form of petrolatum that is widely used in cosmetic, personal care and pharmaceutical applications.

The refining process is important because manufacturers require raw materials with reliable appearance, texture and performance characteristics.

For formulators, consistency is essential. A petroleum jelly used across repeated production batches needs to deliver predictable properties and work effectively alongside other ingredients.

White petroleum jelly may be selected for products such as:

• Skin creams
• Protective balms
• Lotions
• Lip care products
• Cosmetic preparations
• Pharmaceutical ointments
• Topical formulations.

Kerax offers specialist petroleum jelly products for applications requiring moisturising, protective and formulation properties. Its Technijell 4901 product, for example, is supplied for industrial, cosmetic, pharmaceutical and personal care applications.

Why Is Petroleum Jelly Used in Skincare Products?

One of the most familiar uses of petroleum jelly is in skincare.

Its ability to form a protective surface layer makes it useful in formulations designed to help manage moisture loss.

Helping to Reduce Moisture Loss

By creating an occlusive barrier, petroleum jelly can help slow the rate at which water evaporates from the skin.

This can be particularly valuable in products intended for areas that regularly experience dryness.

Supporting a Protective Barrier

The layer created by petroleum jelly can also help provide protection from external exposure.

This is why petrolatum is commonly associated with balms, barrier products and rich moisturising formulations.

Improving Product Texture

Petroleum jelly can contribute to the feel and consistency of a formulation.

Depending on the overall recipe and concentration used, it may help create products with a smooth, rich and spreadable texture.

Working Alongside Other Ingredients

Many formulations contain several types of moisturising ingredients.

For example, a product may contain ingredients that attract moisture alongside petroleum jelly, which then helps reduce the loss of that moisture from the skin surface.

This makes petroleum jelly a useful component within more complex cosmetic formulations.

Why Is Petroleum Jelly Used in Pharmaceutical Ointments?

Petroleum jelly is also widely associated with pharmaceutical and topical formulations.

One of its most important uses is as an ointment base.

An ointment base provides the structure and consistency needed to create a product that can be applied evenly to the skin. Depending on the formulation, petroleum jelly may help:

• Create the desired product texture
• Improve spreadability
• Form a protective surface layer
• Provide a stable base for other formulation components
• Support the controlled application of a topical product.

The exact function will depend on the formulation and the other ingredients present.

For manufacturers, the selection of an appropriate petroleum jelly grade is therefore an important part of product development.

Kerax specifically supplies white petroleum jelly for skincare products, pharmaceutical ointments and topical treatments.

What Products Contain Petroleum Jelly?

Because of its versatility, petroleum jelly can be used across a broad range of product categories.

Common applications include:

Moisturising Creams

Petroleum jelly may be incorporated into rich creams designed to help reduce moisture loss.

Lotions

In suitable formulations, it can contribute protective and conditioning properties.

Lip Care Products

The surface of the lips is regularly exposed to environmental conditions, making protective and moisture-retaining ingredients particularly useful.

Balms

Petroleum jelly can help give balms their smooth texture and protective characteristics.

Ointments

Its semi-solid consistency and barrier-forming properties make it a widely recognised base material for topical ointment formulations.

Cosmetic Products

Petroleum jelly may also be used where manufacturers require smooth application, consistency and surface protection.

Its broad usefulness explains why it remains relevant across both established and newly developed formulations.

What Makes Petroleum Jelly Useful to Formulators?

From a manufacturing perspective, petroleum jelly offers more than one functional benefit.

Versatility

It can be used across numerous product categories, from cosmetics to pharmaceutical formulations.

Smooth Application

Its characteristic texture can help create products that spread evenly across the skin.

Barrier Properties

Its ability to form an occlusive layer is one of its most important functional characteristics.

Formulation Flexibility

Petroleum jelly can be incorporated into a variety of products depending on the required texture, application and performance.

Consistency

For large-scale manufacturing, access to a consistent raw material is essential for maintaining predictable product quality.

Kerax petroleum jelly products are supplied for applications where moisturising, protection and formulation versatility are important.

Is Petroleum Jelly the Same as Vaseline?

The terms are often used interchangeably, but they do not mean exactly the same thing.

Petroleum jelly or petrolatum is the generic name for the ingredient.

Vaseline is a brand name associated with a particular range of products containing petroleum jelly.

This is similar to situations where a well-known brand becomes closely associated with an entire product category.

For manufacturers and formulators, the relevant ingredient terminology is generally petroleum jelly or petrolatum rather than a consumer brand name.

Petroleum Jelly vs Liquid Paraffin: What Is the Difference?

Petroleum jelly and liquid paraffin are both widely used in personal care and pharmaceutical applications, but they have different physical properties.

Petroleum jelly has a semi-solid consistency.

Liquid paraffin, as its name suggests, is a liquid.

These differences influence how each material behaves within a formulation.

Petroleum jelly may be selected where a richer texture, surface barrier or ointment-like consistency is required. Liquid paraffin may be more suitable where a fluid oil component is needed.

In some formulations, the two may even be used together to help achieve particular texture and application characteristics.

The correct choice depends on factors such as:

• The intended product
• Desired viscosity
• Texture
• Application method
• Processing requirements
• Overall formulation design

Why Does Petroleum Jelly Quality Matter?

Manufacturers need more than simply an ingredient with the correct general name.

Quality, consistency and suitability for the intended application are all important.

Variations in colour, texture, consistency or processing behaviour can affect the finished formulation. For businesses producing products at scale, reliable raw material supply is therefore a key consideration.

When selecting a petroleum jelly, manufacturers may need to consider:

• Intended end use
• Required grade
• Product consistency
• Texture
• Compatibility with other ingredients
• Packaging format
• Batch requirements
• Regulatory and specification requirements relevant to the finished application.

Working with an experienced supplier can help manufacturers identify a suitable material for their production needs.

Kerax Petroleum Jelly for Pharmaceutical and Personal Care Applications

Kerax supplies specialist petroleum jelly products for manufacturers working across pharmaceutical, cosmetic and personal care applications.

Its white petroleum jelly range is suitable for uses including skincare formulations, creams, ointments and topical products. Kerax also offers products such as Technijell 4901 for applications requiring moisturising, protective and lubricating characteristics.

With extensive experience in specialist waxes, oils and formulation ingredients, Kerax supports businesses seeking reliable materials for a wide range of manufacturing requirements.

Find the Right Petroleum Jelly for Your Formulation

So, what is petroleum jelly and how does it work?

Petroleum jelly is a highly refined, semi-solid mixture commonly used in skincare, cosmetics, personal care products and pharmaceutical formulations. Its primary function is to form a protective occlusive layer that helps reduce the evaporation of water from the skin.

This ability to help retain moisture, combined with its smooth texture and formulation versatility, explains why petroleum jelly remains such a widely used ingredient.

From creams and lotions to balms and ointments, the right petroleum jelly can play an important role in both product performance and user experience.

Explore the Kerax range of Petroleum Jelly products to find a specialist solution for your formulation and manufacturing requirements.