What Is Methyl Myristate?
Methyl myristate is an ester created when methanol reacts with myristic acid, a saturated fatty acid that naturally occurs in coconut oil, palm kernel oil and nutmeg. This simple oil-like liquid has been on formulators’ shelves since the 1950s when it first appeared as a fragrance carrier and slip agent in perfumes. Over time its pleasant skin feel and safety record led to wider use in skincare and makeup.
The ingredient is produced through a straightforward process called esterification: myristic acid is combined with methanol, heat and a catalyst. The reaction yields methyl myristate, which is then purified and filtered for cosmetic use.
Because it is lightweight yet still richly emollient, methyl myristate shows up in many product types. You will find it in everyday items like lotions, creams, body butters and makeup primers, as well as specialty formulas such as hydrating masks, anti aging serums, after-sun gels, lip balms and hair conditioners. Its job in each product is to soften skin, improve spreadability and leave a smooth non-greasy finish.
Methyl Myristate’s Cosmetic Benefits/Uses
Below are the main ways methyl myristate improves a cosmetic formula
- Skin Conditioning: Helps keep the skin surface soft and supple, enhancing overall texture and giving products a pleasant velvety touch
- Emollient: Forms a thin protective layer that slows water loss, boosts moisturization and makes creams glide effortlessly during application
Who Can Use Methyl Myristate
Methyl myristate is generally considered friendly toward most skin types, including normal, dry and mature skin, thanks to its lightweight emollient feel that softens without leaving a heavy residue. Oily or acne-prone users may wish to watch how their skin responds because richer fatty esters sometimes feel too occlusive on already oil-rich complexions, though this will vary from person to person.
The ingredient is synthesised from plant oils such as coconut or palm kernel so it is suitable for both vegans and vegetarians. No animal-derived material is involved in its standard cosmetic production.
Current safety data show no known risks for pregnant or breastfeeding women when the ingredient is used topically in normal cosmetic concentrations. This is not medical advice; anyone who is pregnant or nursing should consult a healthcare professional before adding new products to their routine to be certain they meet personal needs.
Methyl myristate does not increase photosensitivity, meaning it will not make skin more prone to sunburn. As always, daily sunscreen is still recommended for overall skin health.
Potential Side Effects/Adverse Reactions
Side effects and reactions to the topical use of methyl myristate can vary from person to person. The points below list potential issues yet most users will not experience them when the ingredient is formulated and used correctly.
- Mild irritation such as redness or itching, usually in individuals with very sensitive skin
- Contact dermatitis in rare cases where a person has a specific allergy to fatty esters or formulation add-ons
- Clogged pores in some acne-prone users if applied in high concentrations or layered with heavy occlusive products
If any discomfort, rash or persistent breakout occurs stop using the product and seek guidance from a qualified healthcare provider
Comedogenic Rating
Rating: 3 / 5
Methyl myristate is a medium-chain fatty acid ester. Its oily texture can mingle with skin sebum and, in higher amounts, sit inside pores long enough to foster blockages. This places it in the middle of the scale: not among the worst offenders yet clearly not risk-free for clog-prone complexions.
People who struggle with frequent breakouts may find it safer to choose products that use lower concentrations of this ester or avoid it altogether, while those with balanced or dry skin usually have no issue. Formula type also matters; a light serum that rinses off quickly is less likely to cause congestion than a thick leave-on balm.
Keep in mind that every skin behaves differently so the same product can be fine for one person and problematic for another.
Summary
Methyl myristate works as a skin-softening conditioner and lightweight emollient. It spreads easily, fills in rough patches and leaves a silky film that slows water loss so skin feels smooth and comfortable.
Its use is fairly common in lotions, primers and hair care yet it is not a headline ingredient like hyaluronic acid. Brands choose it because it is affordable, plant-derived and gives products a pleasant slip without a greasy afterfeel.
Current safety data show it to be low risk for irritation, allergy or hormonal disruption when used as intended. As with any new cosmetic, try a small patch first to be sure your skin agrees with the formula.