Sodium Piperazinoethyl Acetate Ethylsulfonate: 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 30, 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 Sodium Piperazinoethyl Acetate Ethylsulfonate?

Sodium Piperazinoethyl Acetate Ethylsulfonate is a lab-made salt prepared from piperazine, acetic acid and ethylsulfonic acid. Its full chemical name, sodium 2-[4-(2-acetoxyethyl)piperazin-1-yl]ethanesulfonate, describes a small water-loving molecule that dissolves easily and stays stable in a wide range of skin-care formulas. Chemists first explored piperazine derivatives in the late 20th century for medical research, then noticed that some versions helped skin feel softer and hold water. Manufacturers now create this ingredient through a multi-step reaction: piperazine reacts with chloroacetic acid and ethylsulfonic acid, then the resulting compound is neutralized with sodium hydroxide to form the sodium salt. The final powder is highly soluble, odorless and compatible with both water-based and some light emulsions. You will usually spot it in leave-on products such as hydrating serums, daily moisturizers, soothing masks and anti-aging lotions where a silky, conditioned skin feel is desired.

Sodium Piperazinoethyl Acetate Ethylsulfonate’s Cosmetic Benefits/Uses

Its main role in skin care is skin conditioning, meaning it helps the surface of the skin feel softer smoother and more supple. By attracting and holding moisture it can reduce tightness and improve the glide of a formula, which in turn boosts user comfort and can enhance the performance of other active ingredients.

Who Can Use Sodium Piperazinoethyl Acetate Ethylsulfonate

This humectant suits most skin types including oily, dry, combination and sensitive because it is lightweight, water soluble and nonocclusive. It does not clog pores and is unlikely to worsen breakouts so acne-prone users can usually tolerate it. People with a history of allergy to piperazine derivatives should avoid it but such cases are rare.

The compound is completely synthetic and contains no animal derived material so it is suitable for both vegans and vegetarians.

Current safety data show no specific risks for pregnant or breastfeeding women when the ingredient is used in topical cosmetics. Absorption through intact skin is minimal. This is not medical advice and anyone who is expecting or nursing should confirm suitability of any skincare product with a doctor to be safe.

Sodium Piperazinoethyl Acetate Ethylsulfonate does not cause photosensitivity and it plays well with common actives such as niacinamide, vitamin C and retinoids.

Potential Side Effects/Adverse Reactions

Side effects from topical use can vary from person to person. The points below describe potential reactions only and most users will not experience them when the ingredient has been properly formulated.

  • Mild stinging or tingling on very freshly exfoliated or irritated skin
  • Transient redness due to increased blood flow in sensitive skin
  • Dry or tight feeling if used in a formula with a high salt concentration
  • Rare allergic contact dermatitis presenting as itching rash or swelling
  • Eye irritation if the product accidentally gets into the eyes

If any of these reactions occur discontinue use and seek guidance from a healthcare professional.

Comedogenic Rating

Rating: 0 / 5

This score reflects its high water solubility, very small molecular size and lack of oily or waxy chains that could block pores. It rinses away cleanly and does not form a film on the skin surface, so it is considered non comedogenic.

Suitable for acne-prone or breakout-prone skin.

No data suggest it interacts with sebum or alters oil production, and it is routinely used in formulas marketed for oily skin types.

Summary

Sodium Piperazinoethyl Acetate Ethylsulfonate is chiefly a skin-conditioning humectant that attracts moisture, softens texture and improves the glide of creams and serums. It does this by binding water molecules and holding them at the skin surface, which helps relieve tightness and supports a smoother barrier.

It is still a niche ingredient compared with big hitters like glycerin or hyaluronic acid, but formulators appreciate its light feel and compatibility with a wide range of actives so its presence in hydrating serums and daily moisturizers is slowly growing.

Current research and cosmetic usage levels show it to be very safe with a low risk of irritation or allergy. As with any new skincare product it is smart to perform a quick patch test before full use just to make sure your skin agrees with it.

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