Diisopropyl Sebacate

Benefits
Hair ConditioningSoftening

What is Diisopropyl Sebacate?

Diisopropyl sebacate is a diester compound formed from sebacic acid, a dicarboxylic acid often derived from castor oil, and isopropanol. This clear, low-viscosity liquid belongs to the sebacate ester family commonly used in personal care formulations like moisturizers, sunscreens, hair sprays, and nail polishes. It works by mimicking natural skin oils to lubricate the surface, enhancing texture without heaviness, while also dissolving lipophilic ingredients for even distribution. As a plasticizer, it adds flexibility to polymer films in hair fixatives or nail coatings, preventing rigidity. Its volatile nature aids quick absorption and evaporation, contributing to lightweight, non-oily finishes in emulsions and anhydrous products.

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

Roles in Formulation

This ingredient serves the following purposes in cosmetic formulations:

Plasticizer
Improves flexibility and reduces brittleness of films (e.g., nail coatings, hair sprays), helping prevent cracking and enhancing smooth application.
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.
Solvent
Dissolves and carries other ingredients, helping control viscosity, evaporation rate, and delivery of actives in both water- and oil-based systems.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Provides a smooth, non-greasy feel by softening skin and filling surface irregularities.

Conditions hair, improving manageability and reducing static.

Enhances formula performance as a solvent and plasticizer for better application and durability.

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 seeking lightweight hydration for oily or combination skin.
Anyone with known sensitivity to sebacate esters.
Those using hair styling products for flexible hold without stiffness.
Those experiencing irritation from similar synthetic emollients.
People preferring quick-absorbing textures in daily moisturizers or sunscreens.
Individuals preferring fully natural or plant-derived ingredients only.

Safety Notes

  • Rated low hazard by independent safety assessments for cosmetic use.
  • Minimal skin irritation potential in typical concentrations.

Frequently Asked Questions about Diisopropyl Sebacate

What is diisopropyl sebacate used for in cosmetics?

It serves as an emollient, solvent, and plasticizer in skincare, haircare, and nail products for smooth texture and flexibility.

Is it safe for sensitive skin?

Safety reviews indicate low irritation risk at common use levels.

Does it help with oily skin types?

Its lightweight, non-comedogenic nature makes it suitable for oilier skin needing hydration without greasiness.