Diethylhexylsuccinate

What is Diethylhexylsuccinate?

Diethylhexyl succinate is a synthetic diester formed from succinic acid, a naturally occurring dicarboxylic acid also produced via fermentation, and 2-ethylhexyl alcohol. This lightweight, odorless liquid appears in makeup foundations, lip products, sunscreens, and hair styling formulations. It functions primarily by solubilizing lipophilic ingredients, reducing overall product viscosity for smoother application, and aiding even distribution. In emollient roles, it lubricates the skin surface to minimize friction and enhance slip. As a plasticizer and film former, it imparts pliability to protective coatings, helping them resist cracking under movement. Its low molecular weight supports quick absorption without greasiness, while compatibility with both oil and water phases allows versatile use in emulsions. Overall, it contributes to stable, user-friendly textures in personal care items.

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.
Film former
Creates a continuous film on skin or hair to improve wear, water resistance, transfer resistance, shine, or hold in sunscreens, makeup, and styling products.
Skin conditioning agent
Maintains skin softness, smoothness, and flexibility.

Benefits

Provides a smooth, lubricated feel by filling skin surface irregularities.

Enhances product flow and even application without heaviness.

Supports durable, flexible films for prolonged makeup or sunscreen wear.

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 normal to dry skin desiring lightweight moisturization.
Those with rare allergies to succinate esters.
Makeup users seeking comfortable, long-wearing formulas.
Users preferring entirely natural or plant-derived ingredients.
People wanting non-sticky sunscreens or hair products with better hold.
Individuals experiencing irritation from similar synthetic emollients.

Safety Notes

  • Considered low hazard for cosmetic use by safety assessments.
  • Non-comedogenic, unlikely to clog pores.

Frequently Asked Questions about Diethylhexylsuccinate

What does diethylhexyl succinate do in skincare?

It acts as an emollient to soften skin, solvent for better mixing, and plasticizer for flexible films.

Is diethylhexyl succinate safe for sensitive skin?

It shows low irritation potential in cosmetic safety reviews.

Does it contribute to breakouts?

No, it has a comedogenic rating of zero.