Ppg-2 C12-15 Alketh-6: 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 Ppg-2 C12-15 Alketh-6?

Ppg-2 C12-15 Alketh-6 is a synthetic ingredient made by attaching small units of propylene oxide and ethylene oxide to medium-chain fatty alcohols that contain 12 to 15 carbon atoms. These fatty alcohols can be sourced from petroleum or from natural oils such as coconut or palm, but once the chemical reactions take place the final material is fully man-made.

The ingredient belongs to a family of mild nonionic surfactants first explored in the 1950s when chemists looked for alternatives to traditional soaps. By balancing oil-loving and water-loving parts in one molecule they created substances that could sit comfortably in cream and lotion formulas without splitting apart. Ppg-2 C12-15 Alketh-6 is one of those results and has been refined over the decades to meet modern safety and performance standards.

Production starts with the chosen C12-15 fatty alcohols. Propylene oxide is added first, creating two propylene glycol units. Ethylene oxide is then added six times, giving the molecule its six ethylene glycol units. The controlled reaction takes place in sealed reactors under heat and pressure, followed by purification to remove any unreacted material.

Because the finished molecule can link oil and water phases, it is widely used in products where a stable, smooth texture matters most. You will often find it in facial moisturizers, body lotions, sunscreens, makeup primers, leave-on hair conditioners, cream cleansers and rinse-off masks.

Ppg-2 C12-15 Alketh-6’s Cosmetic Benefits/Uses

This ingredient plays a single but important role in cosmetic formulas.

Emulsifying: Ppg-2 C12-15 Alketh-6 helps blend oil and water into a uniform mixture, giving creams and lotions their consistent silky feel. A good emulsifier prevents products from separating on the shelf, improves spreadability on the skin and allows formulators to include both nourishing oils and refreshing water-based actives in the same product, enhancing overall performance and user experience.

Who Can Use Ppg-2 C12-15 Alketh-6

Ppg-2 C12-15 Alketh-6 is generally considered suitable for all skin types including oily, dry, combination and normal skin because it stays on the surface and works mainly as an emulsifier without leaving a heavy residue. Those with very sensitive or compromised skin should still approach products containing any synthetic surfactant with caution since their barrier is already fragile and more prone to stinging or redness.

The ingredient itself is vegan friendly when the starting fatty alcohols are sourced from plants like coconut or palm. Some manufacturers may use petroleum-derived alcohols instead, which are also animal-free, so both vegetarians and vegans can typically use products containing this material. If a fully plant-based supply chain matters to you, look for brands that specify vegetable sourcing.

No data suggest that Ppg-2 C12-15 Alketh-6 poses a specific risk to women who are pregnant or breastfeeding. It is used at low concentrations, has minimal skin penetration and is not known to reach systemic circulation. This is not medical advice and anyone who is pregnant or nursing should review their entire skincare routine with a qualified healthcare provider to be on the safe side.

The molecule does not make skin more sensitive to sunlight and does not interact with UV filters, so there is no special need for additional sun precautions beyond daily sunscreen use.

Potential Side Effects/Adverse Reactions

Responses to topical Ppg-2 C12-15 Alketh-6 vary from person to person. The points below outline potential side effects that could occur, although most users will not experience them when the ingredient is used correctly in a finished formula.

  • Mild skin irritation such as temporary redness or itching
  • Allergic contact dermatitis in individuals already sensitized to similar nonionic surfactants
  • Stinging on compromised or freshly exfoliated skin
  • Eye irritation if the product is accidentally rubbed into the eyes

If any of these reactions occur discontinue use and consult a healthcare professional for further guidance.

Comedogenic Rating

Rating: 1 / 5

Ppg-2 C12-15 Alketh-6 is a lightweight nonionic emulsifier that is highly water dispersible and does not leave an oily film on the skin. Because it does not significantly sit inside pores or create a heavy occlusive layer, it has a very low chance of trapping sebum or dead cells that could spark breakouts. No published studies link it to acne flare-ups and formulators often use it in oil-in-water creams precisely because it feels clean after application.

Suitable for acne-prone skin, though overall formula design and accompanying ingredients will ultimately determine whether a product clogs pores.

Worth noting: products using large amounts of rich plant oils alongside this emulsifier may still be comedogenic even if the emulsifier itself is not.

Summary

Ppg-2 C12-15 Alketh-6 is mainly an emulsifier that keeps oil and water blended so lotions remain smooth and stable. Its balanced structure contains a small oil-loving segment that latches onto fats and a larger water-loving segment that mixes with the watery phase, creating a uniform texture that spreads easily and feels light on skin and hair.

The ingredient is moderately popular. It appears in many everyday moisturizers, sunscreens and hair conditioners but is less famous than buzzworthy actives because it works quietly in the background.

Safety data show a low irritation profile at the levels used in cosmetics. It is non-sensitizing for most people, does not penetrate deeply and is free of major health flags. As with any new skincare product you should still perform a simple patch test before full-face use to confirm personal compatibility.

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