

CINNAMIC ACID, P-METHOXY-, ISOPROPYL ESTER; 3- (4-METHOXYPHENYL) -2-PROPENOIC ACID, 1-METHYLETHYL ESTER; 2-PROPENOIC ACID, 3- (4-METHOXYPHENYL) -, 1-METHYLETHYL ESTER; ISOPROPYL ESTER CINNAMIC ACID, P-METHOXY-; 1-METHYLETHYL ESTER 3- (4-METHOXYPHENYL) -2-PROPENOIC ACID; 1-METHYLETHYL ESTER 2-PROPENOIC ACID, 3- (4-METHOXYPHENYL) -; P-METHOXY- ISOPROPYL ESTER CINNAMIC ACID; 3- (4-METHOXYPHENYL) - 1-METHYLETHYL ESTER 2-PROPENOIC ACID; ISOPROPYL P-METHOXYCINNAMATE


Given the incomplete information made available by companies and the government, EWG provides additional information on personal care product ingredients from the published scientific literature. The chart below indicates that research studies have found that exposure to this ingredient -- not the products containing it -- caused the indicated health effect(s) in the studies reviewed by Skin Deep researchers. Actual health risks, if any, will vary based on the level of exposure to the ingredient and individual susceptibility -- information not available in Skin Deep.
| This ingredient: | |
![]() | Cancer |
![]() | Developmental/reproductive toxicity |
![]() | Violations, restrictions & warnings |
![]() | Allergies/immunotoxicity |
![]() | Contamination concerns |
![]() | Lesser or emerging concerns for this ingredient: Data gaps |
About ISOPROPYL METHOXYCINNAMATE: Isopropyl Methoxycinnamate is the ester of isopropyl alcohol and p-methoxycinnamic acid.


| possible* sunscreen concentrations |
UV blocking strength![]() |
|
1.0% |
| |
5.0% |
| |
10.0% |
|
* Skin Deep does not have any concentration information for this ingredient in products. The concentrations shown are only for illustrative purposes.


| type of concern | product conditions | reference |
| Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - Japan - concentration limit in some types of cosmetics when combined with certain other ingredient(s) | Japan's Standards for Cosmetics | |
| Restricted in cosmetics (recommendations or requirements) - use, concentration, or manufacturing restrictions - Japan - prohibited for use in some types of cosmetics when combined with certain other ingredients | Japan's Standards for Cosmetics |
| type of concern | product conditions | reference |
| Not assessed for safety in cosmetics by industry panel |
| government/industry list/academic study | appears on list as | classification(s) |
| Japan's Standards for Cosmetics | ISOPROPYL P-METHOXYCINNAMATE | •Japan - concentration limit in some types of cosmetics when combined with certain other ingredient(s) |
| Japan's Standards for Cosmetics | ISOPROPYL P-METHOXYCINNAMATE | •Japan - prohibited for use in some types of cosmetics when combined with certain other ingredients |
| Japan's Standards for Cosmetics | ISOPROPYL P-METHOXYCINNAMATE | •Japan - concentration limit in some types of cosmetics when combined with certain other ingredient(s) |
| government/industry list/academic study | reference |
| Japan's Standards for Cosmetics | Japan Ministry of Health, Labour and Welfare. 2006. Standards for Cosmetics. Evaluation and Licensing Division. Pharmaceutical and Food Safety Bureau. |
"RTECS®" is a United States trademark owned and licensed under authority of the U.S. Government, by and through MDL Information Systems, Inc.
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