Decyltetradeceth-30: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 27, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Decyltetradeceth-30?

Decyltetradeceth-30 is a synthetic liquid ingredient created by attaching about thirty ethylene oxide units to 2-decyltetradecanol, a fatty alcohol that can be sourced from plant oils or petrochemical feedstocks. The resulting clear to slightly hazy fluid blends easily with both water and oil.

Ethoxylated fatty alcohols emerged in household cleaners in the 1950s when chemists looked for milder alternatives to soap. Their gentle yet effective cleansing power soon attracted personal care brands and by the late 1970s variants such as Decyltetradeceth-30 were appearing in shampoos and body washes. Manufacturing involves feeding purified 2-decyltetradecanol and controlled amounts of ethylene oxide into a heated pressurised reactor, then purifying the finished product to cosmetic grade.

Because it can link oil and water in the same formula Decyltetradeceth-30 is used in facial cleansers, micellar waters, shampoos, cream rinses, exfoliating masks, makeup removers, wet wipes and lightweight moisturizers that need a mild foaming or self-emulsifying boost.

Decyltetradeceth-30’s Cosmetic Benefits/Uses

Formulators pick Decyltetradeceth-30 because it covers several helpful roles in one ingredient.

  • Cleansing – The molecule has a fatty tail that grabs oil and a polyether chain that loves water. When rinsed away it lifts sebum, makeup and daily grime leaving skin or hair fresh but not stripped.
  • Emulsifying – It helps oil and water stay blended stabilising milks, lotions and cream cleansers so the texture stays smooth and uniform over the product shelf life.

Who Can Use Decyltetradeceth-30

Its gentle cleansing action makes Decyltetradeceth-30 suitable for most skin types, including oily, dry and sensitive. Because it has a low tendency to strip the skin’s natural barrier it is often chosen for baby shampoos and micellar waters. People dealing with very reactive or eczema-prone skin should still watch for any tightness or redness, as even mild surfactants can be problematic when the barrier is already compromised.

The ingredient is considered vegan friendly when the starting fatty alcohol is sourced from coconut or palm kernels, which is common in today’s supply chain. If the manufacturer used a petrochemical source it remains vegetarian and vegan, since no animal material is involved.

No studies show any specific risk for pregnant or breastfeeding women when Decyltetradeceth-30 is used topically in rinse-off or leave-on formulas. This is not medical advice and anyone who is pregnant or nursing should have their doctor review the full product ingredient list before use just to be safe.

Decyltetradeceth-30 does not absorb UV light and is not known to increase photosensitivity, so normal daytime exposure is fine after using products that contain it.

Potential Side Effects/Adverse Reactions

Responses to any cosmetic ingredient vary from person to person. The issues listed below are possible yet unlikely for most users when the finished product is well formulated.

  • Mild skin irritation – very high concentrations or prolonged contact can leave the skin feeling tight or slightly red
  • Eye stinging – if shampoo or cleanser runs into the eyes it may cause temporary discomfort
  • Contact allergy – rare cases of allergic dermatitis have been reported with ethoxylated surfactants
  • Increased dryness – people with already compromised barriers may notice extra dryness after frequent use of foaming cleansers

If any burning, itching or rash develops discontinue use and seek advice from a healthcare professional.

Comedogenic Rating

Rating: 1/5

Decyltetradeceth-30 dissolves easily in water and rinses away cleanly so it is very unlikely to build up inside pores. It has no oily film and does not leave residue that could trap dead skin cells. A score of 1 reflects a very low but not absolutely zero chance of clogging, mostly dependent on how it is combined with other ingredients in the finished product.

Overall it is considered suitable for people who are prone to acne or breakouts.

Keep in mind that the final product formula, thickness and how often it is used can all influence whether pores stay clear.

Summary

Decyltetradeceth-30 works as a mild cleanser and an emulsifier. Its fatty tail latches onto oils while its ethoxylated chain mingles with water, which lets it lift away makeup, sebum and grime and also hold oil and water together in a stable blend.

It is a behind the scenes helper rather than a headline ingredient, yet formulators like it because one material can handle two jobs, saving space on the label and money in production.

Safety reviews and long term use in shampoos, wipes and gentle face washes show a low risk profile when used at normal cosmetic levels. Still, every skin is different so it is smart to patch test any new product that lists Decyltetradeceth-30 just to be sure it agrees with you.

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