What Is Sodium Laureth-2 Phosphate?
Sodium Laureth-2 Phosphate, also known as sodium polyoxyethylene (2) lauryl ether phosphate, is a surfactant made by reacting lauryl alcohol derived from coconut or palm kernel oil with ethylene oxide, then neutralizing the product with phosphoric acid and sodium hydroxide. The result is a water-soluble molecule with a hydrophobic tail that loves oil and a hydrophilic head that loves water, a balance that helps it mix the two. First introduced in the 1970s as formulators searched for milder alternatives to traditional sulfates, it quickly found favor for its gentle yet effective cleansing action. Today it appears in face washes, body washes, shampoos, bubble baths, micellar waters, makeup removers, liquid hand soaps, some exfoliating masks and a variety of baby care cleansers.
Sodium Laureth-2 Phosphate’s Cosmetic Benefits/Uses
This ingredient contributes to a formula in more than one way
- Cleansing – its surfactant nature lowers the surface tension of water so dirt, excess oil and product buildup can be lifted away and rinsed off leaving skin or hair feeling fresh but not stripped
- Emulsifying – it helps oil and water stay blended in stable, uniform mixtures which prevents separation improves texture and ensures each use delivers the same performance
Who Can Use Sodium Laureth-2 Phosphate
Thanks to its mild nature and good rinse-off profile Sodium Laureth-2 Phosphate is generally appropriate for most skin and scalp types including normal, oily, combination and even many sensitive skins that struggle with harsher sulfates. Very reactive or allergy-prone users should still check ingredient lists since any surfactant, however gentle, can be drying if overused. It is not known to aggravate eczema or acne specifically but formulas that pair it with high fragrance loads or strong exfoliating acids could tip the balance for delicate complexions.
The compound is made from plant-derived fatty alcohols and synthetic processing agents with no animal by-products so it is considered suitable for vegans and vegetarians.
Current data shows no particular risk for pregnant or breastfeeding individuals when the ingredient is used in rinse-off or leave-on cosmetics at customary levels. This is not medical advice and anyone who is pregnant or nursing should review all personal care products with a healthcare professional for peace of mind.
Sodium Laureth-2 Phosphate does not increase photosensitivity so it will not make skin more prone to sunburn. It also plays well with other common cleansing and conditioning agents and is not known to interfere with active ingredients such as vitamin C or retinoids.
Potential Side Effects/Adverse Reactions
Reactions to topical Sodium Laureth-2 Phosphate vary from person to person. The effects listed below are potential outcomes and are not likely to occur for the average user when the ingredient is formulated and used correctly.
- Mild skin dryness or tightness
- Temporary scalp or skin irritation in very sensitive individuals
- Eye stinging if the product accidentally enters the eyes
- Contact dermatitis in the rare case of an allergy to the surfactant or to residual processing agents
If you experience persistent redness, itching or any discomfort discontinue use and consult a healthcare professional
Comedogenic Rating
Rating: 1/5 – Sodium Laureth-2 Phosphate is highly water soluble and usually found in rinse-off products, so it leaves little to no residue that could block pores. Its molecules are also too large and charged to settle into follicle openings. For these reasons it is generally considered non-pore-clogging and suitable for people prone to acne or frequent breakouts. Because formulas vary, minimal buildup could occur if a product is not rinsed thoroughly, but this is uncommon.
Its low rating also means it can sit alongside richer conditioning agents without greatly increasing the overall comedogenic load of a cleanser or shampoo.
Summary
Sodium Laureth-2 Phosphate works mainly as a cleanser and an emulsifier. Its dual nature lets it grab oil and dirt with its tail while its head stays attracted to water so grime lifts away when you rinse. The same property keeps oil and water evenly blended in a bottle, giving products a smooth, uniform feel each time you use them.
It is a popular pick in face washes, body washes, shampoos, micellar waters and baby cleansers because it cleans effectively yet feels milder than classic sulfates. You will not see it topping ingredient trend charts, but formulators rely on it quietly for its balance of gentleness and performance.
Current research shows it is safe at the levels used in cosmetics, with only mild dryness or irritation possible in very sensitive users. As with any new skincare or haircare product, do a quick patch test first to make sure your skin stays happy.