Dimethyl Lauramine Isostearate

What is Dimethyl Lauramine Isostearate?

Dimethyl Lauramine Isostearate is a synthetic cationic compound formed by esterifying N,N-dimethyl lauryl amine—derived from lauric acid in coconut or palm kernel oils—with branched-chain isostearic acid from vegetable fats. It belongs to the amidoamine class, often used in rinse-off hair care like conditioners and shampoos, as well as leave-on skin lotions and creams. In formulations, it protonates in mildly acidic environments to carry a positive charge, enabling strong adsorption to negatively charged hair cuticles and skin keratin via electrostatic bonds, supplemented by hydrophobic interactions from its fatty tails. This deposition creates a protective lubricious film that minimizes tangling, boosts slip, and enhances sensory attributes. Additionally, it reinforces emulsion interfaces to promote phase uniformity and longevity.

Comedogenic Rating 0/5 Low risk of clogging pores
EWG Safety Rating 1-2 View on EWG →
PubChem View on PubChem →

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Hair conditioning
Improves softness, shine, and manageability by reducing friction and static; commonly achieved with cationic agents, silicones, oils, or conditioning polymers.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.
Emollient
Softens and smooths skin by filling in surface roughness and improving slip; can also help reduce moisture loss when paired with occlusives and film formers.
Emulsion stabilizer
Improves emulsion robustness by preventing droplet coalescence and phase separation, often by thickening, structuring, or strengthening the interfacial layer.

Benefits

Enhances hair manageability and shine by lowering friction and static buildup.

Promotes skin smoothness and flexibility through emollient action on surface lipids.

Supports stable emulsions in creams and lotions for consistent product texture.

Who It's For

A quick guide for who this ingredient may suit (and who should be cautious).

Who May Benefit Who Should Avoid
Individuals with dry, frizzy hair needing improved comb-through.
Those with allergies to fatty acid amines or coconut derivatives.
People experiencing rough or chapped skin for softening effects.
People preferring fully natural or plant-based ingredients only.
Users of multi-phase cosmetics benefiting from better stability.
Individuals sensitive to quaternary-like conditioning agents.

Safety Notes

  • Considered low hazard with EWG scores of 1-2 from verified assessments.
  • Non-comedogenic at rating 0, unlikely to clog pores.

Frequently Asked Questions about Dimethyl Lauramine Isostearate

What does Dimethyl Lauramine Isostearate do in products?

It conditions hair and skin, acts as an emollient for softness, and stabilizes emulsions against separation.

Is it safe for daily use?

Yes, it carries low hazard ratings from safety databases and is suitable in cosmetics at standard concentrations.

Does it cause comedones?

No, with a comedogenic rating of 0, it does not promote pore blockages.