Undecylenic Acid
Preservative
Preservative
May feed Fungal Acne
Fungal acne-safe products avoid ingredients that feed Malassezia yeast, the cause of fungal acne. Unlike regular acne, fungal acne appears as small, uniform bumps and won't respond to typical acne treatments. If you suspect fungal acne, consult a dermatologist for proper diagnosis.
Explained
Undecylenic Acid is an antifungal ingredient. It is a fatty acid. However, it is not as effective as newer fungal treatments.
There are mixed reports about how effective this ingredient is for treating Malassezia folliculitis. Most products containing this ingredient are formulated for other parts of the body, such as feet.
Surviving yeast can potentially feed off the fatty acid base of this ingredient, despite it being an antifungal treatment.
See all 19 products with Undecylenic Acid
What it does
Cleansing
To free from dirt, contamination, or impurities
Emulsifying
The act of emulsion: a suspension of small globules of one liquid in a second liquid with which the first will not mix
Preservative
Tending to preserve or capable of preserving.
Prevalence
Less common
Percentage of products that contain it
0%
Position
Predominant list placement
Bottom 25%
References
Products with Undecylenic Acid
CosIng Data
CosIng ID
38829
INCI Name
UNDECYLENIC ACID
INN Name
undecylenic acid
EC #
 203-965-8
Ph. Eur. Name
acidum undecylenicum
All Functions
Cleansing, Emulsifying, Preservative, Surfactant
