What Is Myreth-3 Laurate?
Myreth-3 Laurate is a synthetic ester created by combining myreth-3, a short chain of ethoxylated alcohol units, with lauric acid derived from coconut or palm kernel oil. The result is a lightweight, oil-like liquid that blends the slip of silicones with the skin friendliness of natural fatty acids. Chemists first explored this molecule in the late twentieth century when formulators wanted alternatives to heavier plant oils that sometimes left a greasy afterfeel. By adjusting the length of the ethoxy chain they found they could fine-tune both texture and solubility, leading to Myreth-3 Laurate’s entry into personal care catalogs in the 1990s.
Production starts with lauric acid which is reacted with ethylene oxide to build the three ethoxy units that give the ingredient its “3” designation. The resulting alcohol is then esterified with another molecule of lauric acid, yielding a clear fluid that remains stable over a broad temperature range. Its balanced polarity makes it an excellent carrier for both water-loving and oil-loving ingredients.
You will most often see Myreth-3 Laurate in face and body moisturizers, lightweight lotions, sheet masks, after-sun gels, cleansing balms, anti-aging serums and hair conditioning creams where it contributes a velvety finish without heaviness.
Myreth-3 Laurate’s Cosmetic Benefits/Uses
Formulators rely on this multitasker for several skin-loving reasons
- Skin conditioning – softens the skin surface, improves flexibility and helps reduce the appearance of dry flakes so skin looks smooth and healthy
- Emollient – forms a thin, breathable layer that traps moisture, enhances spreadability and leaves a light, non-oily feel
Who Can Use Myreth-3 Laurate
Because it is lightweight and non greasy Myreth-3 Laurate suits most skin types including oily, combination, normal and mildly dry skin. Sensitive skin usually tolerates it well thanks to its gentle fatty acid backbone though anyone with a history of reactions to ethoxylated ingredients may wish to proceed with caution.
The lauric acid used to manufacture Myreth-3 Laurate is almost always sourced from coconut or palm kernel oil so the molecule is free of animal derived materials. That makes it generally acceptable for vegans and vegetarians but consumers should still check the overall formula for other animal sourced ingredients.
Current safety data show no evidence that this ester is absorbed into the bloodstream in meaningful amounts, so it is not expected to pose a risk during pregnancy or breastfeeding. This is not medical advice and anyone who is pregnant or nursing should ask a doctor before adding new skincare products just to be safe.
Myreth-3 Laurate is not known to cause photosensitivity or interfere with sunscreen performance, so daytime use is fine as long as normal sun protection habits are followed.
Potential Side Effects/Adverse Reactions
Side effects or reactions to topical Myreth-3 Laurate vary from person to person. The issues listed below are possible yet unlikely for the average user provided the product has been formulated correctly.
- Mild skin irritation – a small number of users may experience redness stinging or itching, usually short lived
- Contact allergy – rare cases of allergic dermatitis have been reported, more likely in individuals already sensitized to ethoxylated surfactants
- Acne flare ups – while it is considered low comedogenic, very acne prone skin might notice clogged pores when the ingredient is used in heavy layers or combined with other rich oils
- Eye irritation – can cause temporary burning or watering if the product accidentally gets into the eyes
If any uncomfortable reaction occurs stop using the product and seek advice from a healthcare professional.
Comedogenic Rating
Rating: 1/5. Myreth-3 Laurate is a lightweight ester that spreads thinly and absorbs without leaving a heavy residue, so it is far less likely to block pores than richer plant butters or mineral oils. Laboratory tests classify it as low on the comedogenic scale and user reports rarely link it to persistent clogging. Very acne prone skin could still see issues if the ingredient is present at high levels in an otherwise occlusive formula, but on its own it is considered safe for most breakout prone users.
Because comedogenicity depends on the entire formulation and individual skin chemistry, the percentage used and the presence of heavier oils or waxes will influence the real world result.
Summary
Myreth-3 Laurate is chiefly a skin conditioning emollient that softens the surface, improves flexibility and locks in moisture by laying down a thin breathable film. Its balanced polarity helps it dissolve both water friendly and oil friendly ingredients which boosts the sensory feel of creams and gels without adding greasiness.
The ingredient sits in the middle ground of popularity. It is not as common as classic silicones or jojoba oil yet formulators who want a silky touch minus the shine often reach for it in modern moisturizers, after sun products and lightweight hair treatments.
Existing safety data show a very low risk profile with minimal irritation potential and virtually no systemic absorption. Still, skin can be unpredictable so it is always wise to patch test any new product that lists Myreth-3 Laurate on the label.