Ingredient review
Diisopropyl Methyl Cinnamate
INCI: DIISOPROPYL METHYL CINNAMATE
Diisopropyl Methyl Cinnamate is a synthetic UV filter that helps protect skin from sun damage, but its use is limited compared to more common sunscreen ingredients.
In plain English
Diisopropyl Methyl Cinnamate is a man-made ingredient that absorbs ultraviolet (UV) light from the sun, helping to prevent it from damaging your skin. It works like a sponge for UV rays, converting them into less harmful heat. You'll find it in sunscreens and some daily moisturizers with SPF. It's not as widely used as other UV filters like avobenzone or octinoxate, but it serves a similar purpose.
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
Diisopropyl Methyl Cinnamate 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 Diisopropyl Methyl Cinnamate.
- 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
Diisopropyl Methyl Cinnamate is a synthetic organic compound belonging to the cinnamate family. It is a UV absorber, meaning it can absorb UV radiation and dissipate it as heat, reducing the amount of UV that reaches the skin.
How it works
When applied to the skin, Diisopropyl Methyl Cinnamate absorbs UV light, particularly in the UVB range (280-315 nm). It converts the high-energy UV radiation into lower-energy heat, which is then released from the skin. This process helps prevent UV-induced damage like sunburn and long-term skin aging.
Pros
Effective UVB absorber
Diisopropyl Methyl Cinnamate absorbs UVB rays effectively, helping to prevent sunburn and reduce the risk of skin damage from sun exposure.
Low irritation potential
This ingredient is generally well-tolerated and has a low risk of causing skin irritation, making it suitable for many skin types, including sensitive skin.
Cons and cautions
Limited UV spectrum
It only absorbs UVB rays, not UVA rays, so it must be combined with other UV filters to provide broad-spectrum protection against both types of UV radiation.
Less common in formulations
Compared to more popular UV filters like avobenzone or octinoxate, Diisopropyl Methyl Cinnamate is less frequently used, which may limit product options for consumers.
Best for
- People looking for additional UVB protection in their sunscreen
- Those with normal to oily skin who want a lightweight UV filter
Use caution if
- Individuals with known allergies to cinnamate compounds
Usage tips
Safety summary
Diisopropyl Methyl Cinnamate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, but like all UV filters, it should be used as directed to minimize any risk of allergic reactions.
Research notes
Research on Diisopropyl Methyl Cinnamate is limited compared to more common UV filters. Studies indicate it is an effective UVB absorber with a good safety profile, but more research is needed on its long-term effects and environmental impact.
Common label clues
- Typical concentration
- Up to 10% in leave-on products
- Regulatory status
- Approved for use in sunscreens in some regions, but not as widely regulated as other UV filters. Always follow local guidelines.
- Common uses
- Sunscreens, Moisturizers with SPF, Lip balms, Anti-aging products
- Environmental note
- Synthetic UV filters like Diisopropyl Methyl Cinnamate may have environmental impacts, particularly on aquatic ecosystems. Research is ongoing.
Good to know
- Diisopropyl Methyl Cinnamate is sometimes listed under the name 'Diisopropyl Methyl Cinnamate' on ingredient labels.
- It is not approved for use in all countries; check local regulations if you are traveling with products containing this ingredient.
Common questions
What is Diisopropyl Methyl Cinnamate in beauty products?
Diisopropyl Methyl Cinnamate is a man-made ingredient that absorbs ultraviolet (UV) light from the sun, helping to prevent it from damaging your skin. It works like a sponge for UV rays, converting them into less harmful heat. You'll find it in sunscreens and some daily moisturizers with SPF. It's not as widely used as other UV filters like avobenzone or octinoxate, but it serves a similar purpose.
What does Diisopropyl Methyl Cinnamate do in a beauty product?
When applied to the skin, Diisopropyl Methyl Cinnamate absorbs UV light, particularly in the UVB range (280-315 nm). It converts the high-energy UV radiation into lower-energy heat, which is then released from the skin. This process helps prevent UV-induced damage like sunburn and long-term skin aging.
Is Diisopropyl Methyl Cinnamate safe for most people?
Diisopropyl Methyl Cinnamate is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, but like all UV filters, it should be used as directed to minimize any risk of allergic reactions.
Who should be careful with Diisopropyl Methyl Cinnamate?
Individuals with known allergies to cinnamate compounds
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.