Ingredient review
Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol
INCI: METHOXYCINNAMIDOPROPYL DIMETHYLAMINOBENZAMIDOPROPYL DIMETHICONOL
A multifunctional silicone that adds shine and softness to hair while offering some UV protection, but it is synthetic and not biodegradable.
In plain English
This ingredient is a type of silicone that is designed to coat the hair or skin, forming a thin, flexible film. It helps reduce frizz, add shine, and make hair feel smoother. It also contains a built-in UV-absorbing component, which means it can help protect hair and skin from some sun damage. However, like many silicones, it is not easily broken down in the environment and may build up on hair over time if not washed thoroughly.
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
Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol 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 Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol.
- 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
A synthetic silicone polymer modified with UV-absorbing groups (cinnamate and aminobenzoate) to provide both conditioning and photoprotective functions.
How it works
When applied, it spreads evenly over hair or skin, forming a hydrophobic film that reduces water loss and smooths the cuticle. The UV-absorbing parts of the molecule help filter some UVA and UVB rays, reducing photodamage to the hair or skin surface.
Pros
Multifunctional
Combines conditioning and UV protection in one ingredient, simplifying formulations.
Lightweight feel
Provides a silky, non-greasy finish on hair and skin without heavy residue.
Cons and cautions
Not biodegradable
As a synthetic silicone, it persists in the environment and may contribute to microplastic pollution.
Potential buildup
Frequent use without clarifying shampoo can lead to dullness and limp hair over time.
Best for
- People with frizzy or dry hair seeking shine and smoothness
- Those who want added UV protection in their hair products
Use caution if
- People with very fine or low-porosity hair prone to buildup
- Those seeking a fully biodegradable or natural routine
Usage tips
Safety summary
Generally considered safe for topical use at typical concentrations. Low irritation and comedogenic risk. However, its environmental persistence is a concern.
Research notes
Limited peer-reviewed studies specifically on this ingredient. Its UV-absorbing properties are inferred from similar cinnamate and aminobenzoate compounds. Most evidence comes from cosmetic chemistry literature and safety assessments.
Common label clues
- Typical concentration
- 0.5% to 5%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and many other regions. Not classified as a sunscreen active ingredient by the FDA, so it is not a replacement for SPF products.
- Common uses
- Hair conditioners, Leave-in treatments, Sunscreens, Styling products
- Environmental note
- Silicones like this one are not readily biodegradable and can accumulate in aquatic environments. Some manufacturers are moving toward more eco-friendly alternatives.
Good to know
- This ingredient is often found in high-end hair serums and leave-in conditioners.
- It is not water-soluble, so it requires surfactants to be washed out.
Common questions
What is Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol in beauty products?
This ingredient is a type of silicone that is designed to coat the hair or skin, forming a thin, flexible film. It helps reduce frizz, add shine, and make hair feel smoother. It also contains a built-in UV-absorbing component, which means it can help protect hair and skin from some sun damage. However, like many silicones, it is not easily broken down in the environment and may build up on hair over time if not washed thoroughly.
What does Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol do in a beauty product?
When applied, it spreads evenly over hair or skin, forming a hydrophobic film that reduces water loss and smooths the cuticle. The UV-absorbing parts of the molecule help filter some UVA and UVB rays, reducing photodamage to the hair or skin surface.
Is Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol safe for most people?
Generally considered safe for topical use at typical concentrations. Low irritation and comedogenic risk. However, its environmental persistence is a concern.
Who should be careful with Methoxycinnamidopropyl Dimethylaminobenzamidopropyl Dimethiconol?
People with very fine or low-porosity hair prone to buildup Those seeking a fully biodegradable or natural routine
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.