Reasons to Avoid This Ingredient Used in Many Ointments and Cosmetics: The Problem with Vaseline (Petroleum) and Mineral Oil (Mineral Oil).

Introduction: Why Are We Discussing Vaseline and Mineral Oil Now?

When choosing skincare, do you look closely at the ingredient list? Familiar "Vaseline" and "mineral oil" are actually petroleum-derived ingredients used in many body creams and lip products. We also used them readily for chapped hands and lips in the past, but after reading recent surveys and research, we felt it was important to know about them if used regularly. Here, we summarize in an easy-to-understand way why they should be avoided and what to actually be careful about.

What are Vaseline (Petrolatum) and Mineral Oil?

Origin and Display Names

Vaseline (petrolatum) and mineral oil (paraffinum liquidum, liquid paraffin) are moisturizers made by refining hydrocarbons obtained from crude oil. In ingredient lists, you may also see terms like "paraffin," "liquid paraffin," and "naphthene."

Role in Cosmetics

These create an oil film to prevent moisture evaporation and are widely used because they are inexpensive and highly stable. "Pharmaceutical grade" used for babies and medicines is more highly refined, but cosmetic grade varies in quality depending on the manufacturing process.

Safety Concerns: MOAH, MOSH, 1,4-Dioxane, etc.

A 2015 cosmetic survey by the German independent research institute Stiftung Warentest reported the detection of MOAH (Mineral Oil Aromatic Hydrocarbons), which are suspected carcinogens, in mineral oil-containing products. There are also studies (Concin et al., 2011) suggesting the accumulation of MOSH (Saturated Hydrocarbons) in tissues. Furthermore, 1,4-dioxane, generated during the manufacturing process of petroleum-derived ingredients and the reaction of surfactants, has been reported in investigations by EWG and regulatory agencies, with IARC and the US EPA expressing concerns about its carcinogenicity. The European Food Safety Authority (EFSA) has also warned about the risks of MOSH/MOAH in its risk assessment.

4 Reasons to Avoid

1) Easily accumulates in the body (difficult to metabolize)

MOSH is difficult to metabolize in the body and is believed to accumulate in fatty tissues, lymph, and the liver. Transdermal absorption from cosmetics and lip balms is considered a contributing factor to this accumulation, raising concerns about long-term effects.

2) Risk of contamination with carcinogens (MOAH, etc.)

Insufficiently refined mineral oils may contain MOAH, which are considered potential carcinogens. In addition, impurities such as 1,4-dioxane may be present, requiring particular caution for lip products and products for infants.

3) Concerns about effects on hormone balance

MOAH and some petroleum-derived impurities are suspected of affecting endocrine function. Although evidence is not conclusive at this time, caution is required due to concerns about the accumulation of long-term low-concentration exposure.

4) Masks the skin's natural functions

While Vaseline is an excellent moisturizer that provides temporary hydration by "covering with an oil film," some point out that it hinders the metabolism of sebum and keratin, and lacks the effect of promoting the skin's natural barrier repair function. As a result, some people may become dependent on the product.

What Should You Actually Do? Specific Measures and Alternatives

Label Checking Points

Pay attention if the ingredient list includes "petrolatum," "mineral oil," "paraffinum," "liquid paraffin," or "paraffin." If it is clearly labeled as medical grade (USP) or "highly refined" or "pharmaceutical grade," the risk of impurities is often low.

Alternative Ingredients and How to Use Them

From our actual trials, switching to squalane (plant-derived) or ceramide-containing moisturizing creams for lip and face hydration, or glycerin-based lotions + light plant oils (jojoba, baobab, etc.), reduced stickiness and stabilized skin condition. Silicone (dimethicone) is a stable alternative that smooths the skin surface, but please choose according to your preference. Especially for babies and infants, we recommend checking the ingredient list and the presence of third-party inspections.

Review Frequency and Usage

While there are situations where it cannot be completely avoided, it is advisable to reconsider the habit of applying thick layers to the lips and face daily. When protection of an affected area is necessary, limit use to short periods and incorporate fundamental dry skin countermeasures (reviewing moisturizing routines and lifestyle habits).

Summary

Vaseline and mineral oil are indeed convenient ingredients that provide an immediate moisturizing sensation, but depending on the degree of refinement and frequency of use, there are risks of impurities such as MOAH, MOSH, and 1,4-dioxane, and concerns about accumulation, carcinogenicity, and hormonal effects have been raised. We, the geefee team, recommend checking ingredient labels when choosing products, and depending on the application, selecting highly refined products or incorporating alternatives such as plant-derived oils and ceramides. Special care should be taken when choosing products for infants and for use on the lips.

Disclaimer: The information in this article is for general informational purposes only and does not constitute medical advice. Please consult a qualified healthcare professional before making any health-related decisions.