Ingredient review

Polysorbate 20 Dicinnamate

INCI: Polysorbate 20 Dicinnamate

A hybrid ingredient that helps blend water and oil while offering mild UV protection, but research is still limited.

beautyskincareemulsifier

In plain English

Polysorbate 20 Dicinnamate is a modified version of a common emulsifier (Polysorbate 20) that has been chemically linked to cinnamic acid, a compound found in cinnamon that can absorb some UV light. In skincare, it helps mix water and oil so products feel smooth and stable, and it may also provide a small amount of sun protection. However, it is not a replacement for dedicated sunscreen ingredients.

Review score

Safety, usefulness, and evidence

3.8Good

3.8/ 5

Potentially useful with some tradeoffs

The evidence base is still emerging, so marketing claims deserve extra caution.

Risk flags are low for most users, though the finished product can still irritate.

Source: semi synthetic
Evidence: emerging
Irritation: low
Clogging risk: low

How reviews are scored

Quick decision guide

Useful, but context matters

Polysorbate 20 Dicinnamate 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 Polysorbate 20 Dicinnamate.
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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

emerging

The ingredient may be promising, but claims should be treated more cautiously.

What it is

A semi-synthetic molecule created by attaching cinnamate groups (derived from cinnamic acid) to Polysorbate 20, a well-known emulsifier. The cinnamate portion gives it the ability to absorb UVB rays, while the Polysorbate 20 part helps blend ingredients that normally don't mix, like oil and water.

How it works

In a cosmetic product, Polysorbate 20 Dicinnamate sits at the boundary between oil and water droplets, keeping them evenly dispersed for a stable, creamy texture. The cinnamate groups in its structure can absorb some UVB radiation (280–315 nm), converting it into heat and reducing the amount that reaches the skin. This dual action makes it useful in formulations where both emulsification and mild photoprotection are desired.

Pros

Dual function

Acts as both an emulsifier and a mild UV absorber, potentially simplifying formulations and reducing the number of ingredients needed.

Gentle on skin

Based on the low irritation profile of Polysorbate 20, this derivative is likely well-tolerated by most skin types, including sensitive skin.

Cons and cautions

Limited UV protection

The UV absorption is not strong enough to replace dedicated sunscreen filters, so it should not be relied upon for sun protection.

Emerging evidence

There is very little published research on this specific ingredient, so its long-term safety and effectiveness are not fully established.

Best for

People looking for a gentle emulsifier with added UV protection
Those who prefer multifunctional ingredients to simplify their routine

Use caution if

Individuals with known sensitivity to cinnamates or cinnamon derivatives
Anyone relying on this as a primary sunscreen ingredient

Usage tips

Use in combination with broad-spectrum sunscreen filters for adequate sun protection.

Start with a low concentration if you have sensitive skin to check for any reaction.

Store products containing this ingredient in a cool, dark place to maintain stability.

Safety summary

Polysorbate 20 Dicinnamate is considered safe for use in cosmetics at typical concentrations, based on the safety profile of its components. However, specific safety data for this hybrid molecule is limited, and individuals with cinnamate allergies should exercise caution.

Research notes

Research on Polysorbate 20 Dicinnamate is sparse. Most information is derived from the known properties of Polysorbate 20 and cinnamic acid derivatives. No large-scale human studies or safety reviews specific to this ingredient were found.

Common label clues

Typical concentration: 0.5% to 5%
Regulatory status: Not specifically regulated as a UV filter in most regions; it is generally considered a cosmetic ingredient and must comply with local cosmetic regulations.
Common uses: Sunscreens, Moisturizers, Serums, Makeup removers
Environmental note: The environmental impact of this modified polysorbate is not well studied, but cinnamate derivatives have been detected in water systems, so biodegradability is a consideration.

Good to know

This ingredient is often found in sunscreens and daily moisturizers with SPF.
It is not a common standalone ingredient; it is usually part of a larger formulation.

Common questions

What is Polysorbate 20 Dicinnamate in beauty products?

What does Polysorbate 20 Dicinnamate do in a beauty product?

Is Polysorbate 20 Dicinnamate safe for most people?

Who should be careful with Polysorbate 20 Dicinnamate?

Individuals with known sensitivity to cinnamates or cinnamon derivatives Anyone relying on this as a primary sunscreen ingredient

Research sources

CIR Safety Review of PolysorbatesOpen PubChem - Cinnamic AcidOpen FDA Sunscreen MonographOpen

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.