What Is Sodium C12-14 Sec-Alketh-8 Carboxylate?
Sodium C12-14 Sec-Alketh-8 Carboxylate is a synthetic surfactant created by reacting a blend of secondary fatty alcohols derived from medium-chain (C12-C14) petrochemical or plant-based sources with ethylene oxide, then further processing the resulting ethoxylated alcohols to introduce carboxylic acid groups and finally neutralizing them with sodium. The “8” in the name shows that each alcohol molecule carries an average of eight ethylene oxide units, giving the ingredient a balanced water-loving and oil-loving character that makes it effective at lifting away grime. Introduced in the late twentieth century when formulators were looking for gentler, more biodegradable alternatives to older sulfate surfactants, it quickly found a place in personal-care products thanks to its mildness and stable foaming profile.
Production involves three main steps: first, the fatty alcohol mixture is reacted with ethylene oxide under controlled pressure and temperature to reach the target ethoxylation level. Next, the ethoxylated alcohols are partially oxidized to add carboxyl groups. Finally, sodium hydroxide is used to neutralize the acids, yielding the water-soluble sodium salt. The resulting powder or liquid concentrate is easy to blend into finished formulas.
You will most often see Sodium C12-14 Sec-Alketh-8 Carboxylate in facial cleansers, body washes, hand soaps, micellar waters, shampoo bars, bubble baths and makeup-removing wipes. Its mildness lets brands position products as suitable for daily use and sensitive skin, while its foam stability makes it popular in luxury textures such as whipped or mousse cleansers.
Sodium C12-14 Sec-Alketh-8 Carboxylate’s Cosmetic Benefits/Uses
This ingredient serves a single, yet essential, role in personal-care formulations.
Cleansing: As a surfactant it lowers the surface tension between water and oils, surrounding dirt, sweat and makeup so they can be rinsed away easily. It produces a creamy lather that feels pleasant on skin and hair, helps products spread evenly and can enhance the solubilization of fragrance or essential oils. Because it is milder than many sulfate surfactants, it supports gentle cleansing without leaving skin overly tight or stripped of its natural lipids.
Who Can Use Sodium C12-14 Sec-Alketh-8 Carboxylate
This surfactant is generally well tolerated by most skin types including normal, oily, combination and dry. Its mild nature also makes it a good option for sensitive skin, though anyone with a known sensitivity to surfactants should proceed cautiously. There are no reports showing it is unsuitable for particular ethnicities or age groups.
The ingredient is produced from synthetic or plant based fatty alcohols and contains no animal derived material, so products featuring it are typically acceptable for vegans and vegetarians. Those following a strict plant based lifestyle may wish to confirm the alcohol feedstock was vegetable sourced, as some manufacturers still use petrochemical routes.
Current safety data do not flag any special risks for women who are pregnant or breastfeeding when the ingredient is used in rinse off products like cleansers or shampoos. Systemic absorption is minimal and it is not known to interfere with hormones. This is not medical advice so anyone expecting or nursing should ask their doctor before starting a new skincare product just to be safe.
Sodium C12-14 Sec-Alketh-8 Carboxylate does not make skin more sensitive to sunlight and it is compatible with most other common cosmetic ingredients. It is also biodegradable, an added bonus for those seeking environmentally considerate formulas.
Potential Side Effects/Adverse Reactions
Side effects and reactions to the topical application of Sodium C12-14 Sec-Alketh-8 Carboxylate can vary from person to person. The following is a list of potential side effects but they remain uncommon when the ingredient is used at the levels typically found in finished products.
- Mild skin irritation in people who have very reactive or compromised skin barriers
- Eye stinging or redness if the cleanser accidentally gets into the eyes before being rinsed away
- Dryness or tightness after repeated use in high concentration formulas or when water is very hot and hard
- Allergic contact dermatitis rare cases of localized redness itching or rash due to true allergy to the surfactant
- Scalp irritation in sensitive individuals using a shampoo containing higher levels of the ingredient
If any irritation or discomfort develops while using a product containing this ingredient discontinue use and consult a healthcare professional or dermatologist.
Comedogenic Rating
Rating: 0 / 5
Sodium C12-14 Sec-Alketh-8 Carboxylate is a fully water-soluble surfactant that rinses off cleanly and leaves no oily residue that could clog pores. It is not derived from heavy oils or waxes, and it breaks down in water rather than sitting on the skin’s surface. For these reasons it earns a solid zero on the comedogenic scale.
Because it does not contribute to pore blockage, this ingredient is considered suitable for people who are prone to acne or breakouts.
Worth noting: most products using this surfactant are rinse-off formulas, so contact time is short and the chance of residue-related congestion is even lower.
Summary
Sodium C12-14 Sec-Alketh-8 Carboxylate is mainly a cleansing agent that lifts dirt, oil and makeup by surrounding them in micelles that rinse away with water. Its balance of hydrophilic and lipophilic parts lets it foam well while remaining gentle, so skin feels clean yet comfortable.
It is a moderately popular choice, often found in midrange and premium cleansers looking for a sulfate-free label and a softer sensory profile.
Current safety data show low irritation potential, minimal absorption and good biodegradability, making it a dependable option for most users. That said, skin is personal, so it is always smart to do a quick patch test when trying any new product that contains this or any other surfactant.