Ingredient review
Diisooctyl Succinate
INCI: Diisooctyl Succinate
A lightweight, non-greasy emollient that helps skin feel soft and smooth without clogging pores.
In plain English
Diisooctyl succinate is a synthetic oil-like ingredient added to skincare and makeup to make them spread easily and leave a silky, non-sticky finish. It is made from succinic acid (a natural substance) and isooctyl alcohol, and it mimics the feel of natural skin oils without being heavy or greasy.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Diisooctyl Succinate is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Diisooctyl Succinate.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Diisooctyl succinate is an ester formed from succinic acid and isooctyl alcohol. It is a clear, odorless liquid used as an emollient and skin conditioning agent in cosmetics.
How it works
It sits on the surface of the skin, filling in tiny gaps between skin cells to create a smooth, soft texture. It also helps other ingredients spread evenly and reduces the sticky or tacky feel of some formulations.
Pros
Lightweight feel
Leaves a silky, non-greasy finish that works well for oily and combination skin types.
Low pore-clogging risk
Rated low on the comedogenic scale, making it suitable for acne-prone skin.
Cons and cautions
Synthetic origin
Derived from chemical synthesis, which may not appeal to fans of natural or organic skincare.
Limited long-term data
While generally considered safe, there is less independent research on this specific ester compared to more common emollients.
Best for
- People with oily or combination skin who want lightweight moisture
- Anyone who dislikes heavy, greasy textures in skincare
Use caution if
- Those seeking exclusively natural or plant-derived ingredients
Usage tips
Safety summary
Diisooctyl succinate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in regulatory reviews.
Research notes
Safety assessments by cosmetic ingredient review panels have found diisooctyl succinate to be safe as used. Most evidence comes from industry-sponsored safety studies rather than independent clinical trials.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics by the FDA and EU CosIng database. No known restrictions at typical concentrations.
- Common uses
- Moisturizers, Sunscreens, Makeup, Serums
- Environmental note
- As a synthetic ester, its biodegradability is moderate. It is not derived from palm oil or other high-impact crops.
Good to know
- It is often used as a replacement for heavier oils in 'oil-free' formulations.
- The name 'diisooctyl' refers to the branched alcohol used, which contributes to its light texture.
Common questions
What is Diisooctyl Succinate in beauty products?
Diisooctyl succinate is a synthetic oil-like ingredient added to skincare and makeup to make them spread easily and leave a silky, non-sticky finish. It is made from succinic acid (a natural substance) and isooctyl alcohol, and it mimics the feel of natural skin oils without being heavy or greasy.
What does Diisooctyl Succinate do in a beauty product?
It sits on the surface of the skin, filling in tiny gaps between skin cells to create a smooth, soft texture. It also helps other ingredients spread evenly and reduces the sticky or tacky feel of some formulations.
Is Diisooctyl Succinate safe for most people?
Diisooctyl succinate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, and no significant safety concerns have been reported in regulatory reviews.
Who should be careful with Diisooctyl Succinate?
Those seeking exclusively natural or plant-derived ingredients
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.