Hydrogenated Talloweth-12: 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 Hydrogenated Talloweth-12?

Hydrogenated Talloweth-12 is a man-made ingredient created by taking animal tallow, turning it into a fatty alcohol, adding hydrogen to make it more stable, then attaching about twelve units of ethylene oxide. The result is a smooth waxy substance that blends easily with oils and water.

Tallow was one of the earliest fats used in soaps. As cosmetic science moved forward, chemists began adding ethylene oxide to tallow alcohols in the mid-20th century to make gentler, more versatile cleansers and emulsifiers. The hydrogenated form used today is cleaner, has less odor and stays stable for longer periods on store shelves.

Production starts with purified beef or mutton fat collected from the food industry. The fat is split into fatty acids, reduced to fatty alcohols, hydrogenated for stability, then reacted with ethylene oxide in a controlled setting. Each batch is filtered and tested to meet cosmetic-grade standards.

You will most often see Hydrogenated Talloweth-12 in rinse-off cleansers, face masks, creamy body washes, hair conditioners, anti-aging lotions and long-wear makeup. Formulators like it because it lets water and oil mix smoothly and keeps textures thick yet spreadable.

Hydrogenated Talloweth-12’s Cosmetic Benefits/Uses

This ingredient brings several helpful roles to a formula:

  • Light stabilizer: Helps protect the product’s color and active ingredients from breaking down when exposed to light so the formula stays effective longer
  • Cleansing: Lifts away dirt, oil and leftover makeup without stripping the skin’s natural barrier which makes cleansers feel soft rather than squeaky
  • Emulsifying: Lets water and oil stay blended so creams do not separate in the jar and glide on evenly during use
  • Viscosity controlling: Adjusts thickness giving lotions a rich feel and keeping shampoos from being too runny

Who Can Use Hydrogenated Talloweth-12

Hydrogenated Talloweth-12 is generally suitable for normal, dry, oily and combination skin because it is a mild emulsifier that does not overly strip or occlude. Very acne-prone skin may want to proceed with caution since animal-derived fatty alcohols can occasionally sit on the surface and contribute to congestion in people already prone to breakouts.

Because the raw material comes from beef or mutton fat it is not considered vegan or vegetarian friendly. Consumers who avoid animal-derived ingredients for lifestyle, religious or ethical reasons should look for plant-based alternatives that serve a similar function.

Current safety data show no specific hazards for women who are pregnant or breastfeeding when Hydrogenated Talloweth-12 is used topically in cosmetic concentrations. Absorption through intact skin is minimal. That said this is not medical advice and anyone who is pregnant or nursing should run any skincare product past a qualified healthcare provider just to be sure it fits their individual situation.

The ingredient does not make skin more sensitive to sunlight so it is not classified as photosensitising. It can be used morning and night without special sun precautions beyond a normal daily SPF.

No other notable usage restrictions apply aside from the general recommendation to avoid if you have a known allergy to beef or mutton derivatives.

Potential Side Effects/Adverse Reactions

Side effects from topical Hydrogenated Talloweth-12 can vary between individuals. The points below outline potential reactions but they are uncommon when the ingredient is used at standard cosmetic levels and most people will not experience any issues.

  • Contact irritation such as mild redness, itching or stinging in very sensitive skin
  • Allergic contact dermatitis in people with a specific sensitivity to tallow or ethoxylated fatty alcohols
  • Transient eye irritation if a cleanser or shampoo containing the ingredient gets into the eyes
  • Build-up on scalp or hair with heavy daily use which can leave strands feeling coated
  • Possible pore clogging in individuals who are extremely acne prone especially if the formula is rich and left on the skin

If any of these reactions occur discontinue use and seek advice from a dermatologist or healthcare professional.

Comedogenic Rating

Rating: 2 / 5. Hydrogenated Talloweth-12 is derived from long-chain fatty alcohols that can sit on the surface of skin, yet the hydrogenation and ethoxylation steps make the molecule more water friendly and easier to rinse away than raw tallow. Most users will not notice pore clogging, though those with very oily or congestion-prone skin could experience mild build-up if the formula is rich or left on the skin for long periods. Overall it is considered low to moderate on the comedogenic scale and generally acceptable for acne-prone users in rinse-off products, while leave-on creams may warrant caution. Product texture, concentration and the rest of the formula can push the real-world comedogenicity higher or lower.

Summary

Hydrogenated Talloweth-12 acts as a light stabilizer, cleanser, emulsifier and viscosity controller. Its ethoxylated structure lets it mingle with both oil and water so it can keep creams from separating, give shampoos a velvety lather, thicken lotions to a plush feel and shield colorants and actives from light damage. It turns up mainly in mass-market body washes, hair conditioners and some long-wear makeup but is less common in high-end vegan or natural lines because it comes from animal fat.

Multiple safety reviews show it is well tolerated on intact skin with a low rate of irritation or allergy and it does not raise systemic health concerns at typical cosmetic levels. As with any new ingredient it is smart to patch test a product first to be sure it meshes with your individual skin chemistry before incorporating it into daily use.

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