What Is Myristyl Lactate?
Myristyl Lactate, also called tetradecyl lactate, is an ester created when lactic acid reacts with myristyl alcohol. The lactic acid is usually sourced from the fermentation of plant sugars while myristyl alcohol often comes from coconut or palm kernel oil. The beauty industry began using this ester several decades ago as brands looked for lightweight emollients that would leave skin smooth without a greasy feel. Production is straightforward: manufacturers combine purified lactic acid with myristyl alcohol under controlled heat and catalytic conditions, then purify the resulting liquid to cosmetic grade.
Its silky texture and mild nature make it a popular choice in many leave-on and rinse-off products. You will often find it in facial moisturizers, body lotions, sunscreens, cream cleansers, makeup primers, liquid foundations, lipsticks, hair conditioners and specialty masks aimed at softening or replenishing dry skin.
Myristyl Lactate’s Cosmetic Benefits/Uses
This ingredient is valued for two main functions in skin and hair care formulas
- Skin conditioning – It forms a light, breathable layer that helps skin feel supple and look smoother. By reducing moisture loss it supports a healthy skin barrier and can improve the spreadability of other active ingredients.
- Emollient – Its velvety finish softens rough patches and reduces the appearance of flakiness. Unlike heavier oils it absorbs quickly so products feel light yet still deliver lasting comfort.
Who Can Use Myristyl Lactate
Myristyl Lactate suits most skin types, especially normal, dry or combination skin looking for lightweight softness. Sensitive skin usually tolerates it well thanks to its gentle profile, though people with very oily or acne-prone skin may prefer to monitor how their pores respond since any emollient can feel too rich for some.
The ingredient is typically vegan and vegetarian friendly because modern cosmetic suppliers ferment plant sugars for the lactic acid and derive myristyl alcohol from coconut or palm kernel oil rather than animal sources. If a fully plant-based supply chain matters to you, confirm this with the brand.
No data link Myristyl Lactate to reproductive or developmental harm, so it is generally regarded as safe for pregnant or breastfeeding users in rinse-off and leave-on products. This is not medical advice and anyone who is pregnant or nursing should double-check any skincare routine with their doctor.
The ester does not cause photosensitivity and will not make skin more reactive to sunlight. It also plays nicely with most other cosmetic ingredients without known interactions.
Potential Side Effects/Adverse Reactions
Responses to topical Myristyl Lactate vary by individual. The effects below are possible yet uncommon when formulas are well balanced and used as directed.
- Mild skin irritation – redness, stinging or itching can occur in very sensitive users
- Allergic contact dermatitis – rare but possible if someone develops a true allergy to the ester or trace impurities
- Congested pores or breakout flare-ups – those already prone to blackheads or pimples might notice extra clogging if the rest of the routine is heavy
- Eye irritation – watering or burning if the product accidentally gets into the eyes
If any of these reactions appear stop use immediately and seek advice from a healthcare professional or dermatologist.
Comedogenic Rating
Rating: 2 / 5. Myristyl Lactate is a lightweight ester that sits on skin more like a silky film than a thick oil, so it is less likely to block pores than heavier fatty acids or butters. Still, it contains a 14-carbon chain that gives it some occlusive character which can trap dead cells or sebum in people who are very clog prone. Most balanced formulas keep the concentration low, so occasional use rarely causes issues. Overall it is generally tolerated by those with mild or occasional blemishes but those with persistent acne may prefer to use it sparingly or choose entirely non-comedogenic options.
Because it is an ester rather than a pure fatty oil it breaks down over time on skin, which helps limit its pore-clogging potential compared with straight myristyl alcohol or myristic acid.
Summary
Myristyl Lactate works mainly as a skin-conditioning emollient. It smooths rough areas, boosts softness and locks in moisture by forming a light breathable layer. Its quick-absorbing texture also improves the spread of creams, sunscreens and makeup, giving products a pleasant slip without a greasy afterfeel.
The ingredient enjoys steady, if not headline-grabbing, popularity because it offers reliable sensory benefits at a modest cost and fits clean-beauty preferences when sourced from plants.
Safety data and decades of cosmetic use show a low risk of irritation or toxicity, so most people can use it with confidence. As with any new skincare ingredient it is smart to patch test a fresh product first to make sure your skin agrees with the formula.