Peg-60 Castor Oil: 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: July 1, 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 Peg-60 Castor Oil?

Peg-60 Castor Oil is a plant-derived ingredient made by reacting natural castor oil with roughly sixty units of ethylene oxide. This process, called ethoxylation, transforms thick sticky castor oil into a water-friendly liquid that blends easily with both oils and water. The raw castor oil comes from the seeds of the Ricinus communis plant, a crop cultivated for centuries for lamp fuel, soaps and hair dressings. Chemists in the mid-20th century discovered that adding ethylene oxide gave castor oil superior solubility, paving the way for its steady adoption in shampoos and skin care.

The ingredient is produced in large stainless-steel reactors where purified castor oil is heated then exposed to ethylene oxide gas under controlled pressure. After reaching the desired average of sixty ethylene oxide units per molecule, the mixture is cooled, filtered and quality-checked for purity. The finished liquid is clear to pale yellow and has a mild characteristic scent.

Thanks to its balance of oil-loving and water-loving parts Peg-60 Castor Oil shows up in a wide range of personal care products. You will often spot it in facial cleansers, micellar waters, makeup removers, creamy body washes, sheet mask essences, lightweight lotions, hand creams and leave-in hair conditioners where it helps keep formulas stable and rinse away grime.

Peg-60 Castor Oil’s Cosmetic Benefits/Uses

This versatile ingredient supports formulas in two key ways

  • Cleansing: The molecule can surround dirt, excess sebum and makeup particles then lift them away when rinsed, giving gentle yet effective cleansing without stripping the skin or hair.
  • Emulsifying: It acts like a molecular matchmaker that holds water and oil together so creams stay smooth, lotions stay fluid and clear cleansers stay crystal clear throughout their shelf life.

Who Can Use Peg-60 Castor Oil

Peg-60 Castor Oil suits most skin types including normal, dry, combination and oily because it is lightweight and rinses clean. Sensitive skin usually tolerates it well yet a small number of people who react to polyethylene glycols or castor derivatives might notice redness or stinging so extra caution is wise for that group.

The ingredient is plant derived and contains no animal by-products which makes it appropriate for vegans and vegetarians.

Current safety data show no specific hazards for pregnant or breastfeeding women when Peg-60 Castor Oil is used topically in cosmetic amounts. This is not medical advice so anyone expecting or nursing should ask a health professional before adding new products just to be safe.

It does not cause photosensitivity and there are no known issues with sun exposure after use. Because it helps rinse away residue it is even popular in gentle daily cleansers for people who spend time outdoors.

Potential Side Effects/Adverse Reactions

Reactions to topical Peg-60 Castor Oil differ from person to person. The points below describe potential side effects though most users will not run into these problems when the ingredient is properly formulated in a finished product.

  • Transient skin irritation such as mild redness tingling or itching
  • Allergic contact dermatitis in individuals sensitive to castor bean proteins or polyethylene glycols
  • Eye stinging or watering if the raw ingredient or a concentrated formula gets into the eyes
  • Rare contamination concerns with trace 1,4-dioxane if the supplier does not follow strict purification standards

If any unwanted effect appears stop using the product immediately and consult a healthcare professional if symptoms persist or worsen.

Comedogenic Rating

Rating: 1/5

Peg-60 Castor Oil is highly water soluble and used at low levels in rinse-off or lightweight leave-on products so it does not linger on skin like pure castor oil. Its ability to emulsify oils actually helps remove pore-clogging residue rather than add to it, which is why chemists consider it near non-comedogenic.

Most people who are prone to acne can use products containing this ingredient without extra worry, though overall formula and personal skin factors still matter.

Because it is a surfactant-type material it is usually included in cleansers that get rinsed off which further lowers any clogging potential.

Summary

Peg-60 Castor Oil mainly acts as a cleanser and emulsifier. Its oil-friendly tail grabs onto sebum and makeup while its water-friendly head lets those impurities rinse away easily so formulas stay stable and skin feels fresh.

It appears in a wide variety of modern cosmetics from micellar waters to leave-in conditioners yet it is not a headline ingredient that shoppers actively seek out which keeps its popularity quiet but steady behind the scenes.

Current research shows it is safe for topical use in the concentrations found in cosmetics with only rare irritation or allergy reports. As with any new product, doing a small patch test first is the simplest way to rule out personal sensitivity.

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