Isopropyl Myristate: What Is It, Skin Benefits, Cosmetic Uses & Side Effects

Priya Singh
Fact-Checker: Priya Singh
This article was last updated on: July 22, 2023
Table of Contents

Imagine the scene – you’re standing in a boutique skincare aisle, scanning through the endless rows of lotions, creams, and serums. You pick one up, admiring the sleek packaging, but as you flip it over and glance at the ingredients list, your brow furrows. Various compounds, each name intriguing as the last, presents itself– a foreign syllabus that leaves you clueless and intrigued at the same time.

One such ingredient you’ve likely spotted more than once is Isopropyl Myristate. Sounds like something straight out of a chemistry textbook, doesn’t it?

Well, fear not. This article is here to demystify this cosmetic conundrum – we’re diving deep into the world of Isopropyl Myristate. We’re going to untangle its complexities, explore its role in the cosmetic industry, and elucidate why it continues to be a favorite among skincare formulators.

What is Isopropyl Myristate?

Isopropyl Myristate, also known as Tetradecanoic acid, isopropyl ester, is a fascinating fixture in the world of cosmetics. This ingredient, which is typically a colorless liquid, is an ester of isopropyl alcohol and myristic acid. Its purpose in cosmetic products lies in its multifaceted functionalities – acting as a binding agent, fragrance enhancer, perfuming ingredient, and most notably, a skin-conditioning emollient.

As an emollient, Isopropyl Myristate works by forming a protective barrier on the skin’s surface, thereby helping to lock in moisture and maintain hydration. It also enhances the overall texture and feel of products, making your creams and lotions glide smoothly onto your skin.

While Isopropyl Myristate can sometimes be purchased as a standalone product by DIY skincare enthusiasts or professional formulators, it is most commonly found as part of a wider blend of ingredients within cosmetic products. Concentrations of this ingredient can vary widely depending on the specific formulation and purpose of the product.

Who Can Use Isopropyl Myristate?

The beauty of Isopropyl Myristate lies in its broad-ranging versatility. This ingredient is suitable for all skin types, making it a valuable asset in a wide range of personal care products. Whether your skin is dry, oily, or a combination of both, Isopropyl Myristate could offer a certain level of benefit.

Being a chemical compound synthesized from isopropyl alcohol and myristic acid, it doesn’t contain any animal-derived ingredients, making it suitable for both vegans and vegetarians.

Furthermore, there is no evidence to suggest that Isopropyl Myristate is problematic for women who are pregnant or breastfeeding. However, as with any skincare ingredient, it’s always a good practice to consult with a healthcare provider to ensure it is safe for your unique circumstances.

Isopropyl Myristate Skin Benefits

Isopropyl Myristate serves as a true powerhouse ingredient, particularly when it comes to skin conditioning and maintaining moisture. Let’s examine each benefit in greater detail:

  • Skin Conditioning & Emollient Properties: Perhaps the most vital role of Isopropyl Myristate is its functioning as an emollient. It penetrates the stratum corneum (the outermost layer of the skin) and acts as a barrier, aiding in the prevention of moisture loss. This action helps to maintain skin hydration, leading to skin that feels smoother and appears healthier.

Do remember, however, that these benefits are not set in stone. Consistent usage is required to maintain the advantageous effects of Isopropyl Myristate on the skin, as the skin reverts to its original state when the usage is discontinued.

Isopropyl Myristate’s Non-active Cosmetic Uses

Beyond its leading role as a skin conditioner, Isopropyl Myristate serves valuable non-active functions in cosmetic formulations, enhancing the final product’s overall performance, texture, and appeal. Let’s delve into those uses:

  • Binding: This ingredient acts as a binder in many formulations, holding together the various components to ensure a uniform and stable product. This plays a crucial role in the overall texture and feel of the cosmetic product, making sure it doesn’t separate or become uneven over time.
  • Fragrance/Perfuming: Isopropyl Myristate’s ability to enhance the absorption of other ingredients isn’t just limited to beneficial skin compounds. It serves to reinforce the strength of the fragrances used in the product, ensuring they permeate effectively and linger longer on the skin. This makes it a much-loved addition to perfumes and scented body lotions.

In essence, Isopropyl Myristate’s non-active roles complement its active benefits, working collectively to enhance the product’s overall performance and user satisfaction.

Isopropyl Myristate Potential Side Effects

It’s essential to bear in mind that just as our personalities vary, so too does our skin’s reaction to different ingredients. The reasons behind this diversity lie in our unique genetic makeup, lifestyle, and even our current environmental conditions. Knowing your skin, understanding your skin type, and testing products accordingly, are key steps in ensuring any cosmetic product or ingredient is right for you. Find out more about determining your skin type here.

Potential side effects or interactions with Isopropyl Myristate, although uncommon, can include:

  • Irritation: While Isopropyl Myristate is generally well-tolerated, in rare cases, it may cause skin irritation in some individuals.
  • Clogged pores: For those with particularly oily skin, or those prone to acne, Isopropyl Myristate may contribute to clogged pores leading to breakouts. It’s always key to monitor how your skin responds to new products.

If you experience any of these side effects while using a product containing Isopropyl Myristate, it’s advisable to discontinue use immediately and consult with a healthcare or skincare professional for advice.

However, it’s important to note that these adverse reactions to Isopropyl Myristate are relatively rare. Generally speaking, the ingredient is considered safe and effective for use in cosmetic and skincare products.

As a closing note, the importance of conducting a patch test when introducing a new cosmetic product into your regimen cannot be overstated. A patch test can help to predict if your skin will have a negative reaction to a new product before you apply it to a larger area. For a step-by-step guide on how to correctly perform a patch test, make sure to visit our detailed patch testing guide.

Comedogenic Rating

When it comes to the comedogenic scale, Isopropyl Myristate rates at a 5, signifying it as highly comedogenic. This rating reflects the ingredient’s potential to clog pores, especially for those with oily or acne-prone skin. However, it’s important to note that comedogenicity can vary greatly across individuals, and something that clogs one person’s pores may not have the same effect on someone else. Comedogenic ratings should be seen as a guide, not a definitive answer. While those prone to breakouts should generally exercise caution when considering products containing Isopropyl Myristate, it does not categorically exclude its usage for everyone with such skin conditions.


The journey to achieving your ideal skin can seem like an ever-evolving experiment, a continual cycle of trial and error. And ingredients like Isopropyl Myristate represent one more variable in that equation. With its dual active and non-active effects, it offers immediate skin benefits, while enhancing the overall quality and performance of cosmetic products.

Opting for products containing this ingredient could be a boon for those seeking to nourish their skin while enjoying a smoother overall product application. Its role as a binder, fragrance enhancer, and skin conditioning agent makes it a multifaceted contributor to your skin’s sophistication.

Isopropyl Myristate isn’t exactly a new kid on the block, nor is it particularly avant-garde. It has been an established ingredient in the cosmetic industry for quite some time due to its versatility and performance-enhancing qualities.

Seeing tangible results from the use of this ingredient will largely depend on personal factors such as skin type and the specific skincare concern you are addressing. However, its moisturizing effects are often experienced immediately upon application due to its emollient properties.

Arriving at the end of this journey, you may still harbor some concerns about Isopropyl Myristate. Perhaps its comedogenic rating has given you pause, or you’re uncertain about potential side effects. Remember, understanding your skin and its unique needs are key.

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