What Is Sodium C12-15 Alkoxypropyl Iminodipropionate?
Sodium C12-15 Alkoxypropyl Iminodipropionate is a gentle, water-soluble surfactant made from medium-chain fatty alcohols derived from coconut or palm oil that are reacted with propylene oxide then combined with iminodipropionic acid and neutralized with sodium. The result is a mild, salt-based compound that loves both water and oil, letting it break up dirt and excess sebum without stripping the skin or hair. It first appeared in personal care formulas in the late 1990s when brands were searching for alternatives to harsher sulfates. Production involves ethoxylation of the natural fatty alcohols, followed by a controlled reaction with iminodiacetic acid and final neutralization. You will most often spot it in sulfate-free shampoos, facial cleansers, baby washes, body washes, micellar waters and some mild foam baths.
Sodium C12-15 Alkoxypropyl Iminodipropionate’s Cosmetic Benefits/Uses
This ingredient earns its place in formulas thanks to the following roles
- Cleansing: Its surfactant nature lowers the surface tension of water so oils and impurities can be lifted away easily resulting in a thorough yet mild cleanse that suits sensitive skin and color-treated hair
- Hair conditioning: Leaves a light, smooth feel on strands reducing static and improving manageability which helps hair look softer and shinier after rinsing
Who Can Use Sodium C12-15 Alkoxypropyl Iminodipropionate
This mild surfactant is generally well tolerated by all skin types including dry, sensitive, oily, combination and normal because it cleans without leaving a tight stripped feel. Those with highly reactive or allergy-prone skin may still prefer to choose fragrance-free formulas to keep the overall risk low.
The ingredient is plant derived from coconut or palm oil and contains no animal by-products so it aligns with vegan and vegetarian lifestyles. Always verify that the finished product as a whole meets cruelty-free or vegan standards if those claims matter to you.
No research suggests a specific risk for pregnant or breastfeeding women when using products containing this surfactant. That said this is not medical advice and anyone who is pregnant or nursing should check with a healthcare professional before introducing new personal-care items just to be safe.
Sodium C12-15 Alkoxypropyl Iminodipropionate is not known to increase photosensitivity so sun exposure precautions beyond routine daily sunscreen use are not necessary. It is also odorless and non-volatile so it will not interfere with leave-on actives or fragrances in the same formula.
Potential Side Effects/Adverse Reactions
Individual responses to topical Sodium C12-15 Alkoxypropyl Iminodipropionate can vary. The effects listed below are possible yet uncommon when the ingredient is used at appropriate levels in a well-formulated product.
- Mild skin redness or stinging during use
- Temporary eye irritation if the product accidentally runs into the eyes
- Allergic contact dermatitis in people with a specific sensitivity to the compound
- Scalp dryness or flaking if used in very high concentrations or left on for prolonged periods
If you experience any persistent discomfort or irritation stop using the product and consult a medical professional.
Comedogenic Rating
Rating: 0/5. Sodium C12-15 Alkoxypropyl Iminodipropionate is completely water-soluble and rinses away without leaving an oily film that could block pores, so it is considered non-comedogenic. Its molecular structure is designed to lift oils off the skin rather than sit on the surface, which keeps residue to a minimum.
This makes the ingredient comfortably suitable for people prone to acne or breakouts.
Keep in mind that the overall comedogenicity of a finished product also depends on the other ingredients and the formula’s rinse-off profile.
Summary
Sodium C12-15 Alkoxypropyl Iminodipropionate acts mainly as a gentle cleanser and light hair conditioner. By lowering water’s surface tension it surrounds dirt, oil and product buildup so they wash away easily, while its mild amphoteric nature leaves skin and hair feeling soft rather than stripped.
You will find it often in sulfate-free shampoos, baby washes and facial cleansers, although it is still less talked about than bigger names like coco-glucoside or sodium cocoyl isethionate. Formulators like it because it balances mildness with good foam and it pairs well with other surfactants.
Current data shows the ingredient is low risk for irritation, allergy or pore clogging, making it safe for everyday use in rinse-off products. As with any new cosmetic formula it is smart to do a quick patch test first, just to be on the safe side.