Question 1

What does C12-13 Alketh-3 do in a cosmetic formula?

Accepted Answer

This ingredient is a nonionic surfactant and emulsifier, used to help oil and water phases mix and to improve wetting, dispersion, and cleansing performance.

Question 2

Is C12-13 Alketh-3 clean?

Accepted Answer

From a clean-beauty perspective, it has friction because it is an ethoxylated material, which means brands often look for testing that confirms low residual ethylene oxide and 1,4-dioxane. It can also be more irritating than gentler nonionic options in leave-on products, depending on concentration and formula context.

Question 3

Is C12-13 Alketh-3 sustainable?

Accepted Answer

This material is typically made from fatty alcohols reacted with a petrochemical-derived ethoxylation reagent, so its sourcing may be partly plant-based and partly fossil-derived. Alcohol ethoxylates in this carbon range are generally considered readily biodegradable, although rinse-off use still makes aquatic exposure relevant.

Question 4

Is C12-13 Alketh-3 COSMOS-approved?

Accepted Answer

It is not aligned with COSMOS-natural or COSMOS-organic expectations because ethoxylated ingredients are generally outside the standard. From a Green Chemistry view, its biodegradability is a positive, but the ethoxylation step and possible residual processing impurities weaken its profile.

Question 5

How does C12-13 Alketh-3 work chemically?

Accepted Answer

This compound is a short-chain ethoxylated fatty alcohol, meaning a C12-C13 hydrophobic tail is paired with a small polyether head group, giving it low-to-moderate water dispersibility and strong interfacial activity. It is typically stable across common cosmetic pH ranges, and formulators often pair it with higher-HLB surfactants or emulsifiers to tune clarity, foam, and emulsion stability.