MYRISTIC ACID
Is MYRISTIC ACID safe for seborrheic dermatitis?
Myristic Acid is best treated as a cautious avoid during an active seb derm flare or when you are following a strict Malassezia-conscious routine. It is a C14 fatty acid. Laboratory experiments show that Malassezia fatty-acid uptake machinery can handle myristic acid, which creates a theoretical reason for caution. This is not proof that every product containing it will worsen seb derm.
The evidence is mixed rather than absolute. In a newer defined-medium study, two tested Malassezia species grew poorly with free myristic acid under those particular conditions, showing that species and the way a fatty acid is supplied can change the result. A rinse-off cleanser may also behave differently from a leave-on cream. During a flare, avoiding Myristic Acid is the simpler cautious option; otherwise, judge the complete formula by whether it repeatedly causes itching, redness, tightness or stinging.
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What is it?
A quick identity check, separate from the seb derm guidance above.
01 / 05- Material type
- Saturated fatty acid
- Ingredient family
- Saturated long-chain fatty acid
- Cosmetic function
- Fragrance, Opacifying, Perfuming, Surfactant - Cleansing
- Formula associations
- Cleansing surfactants, emulsifiers and texture builders
What is MYRISTIC ACID used for in skincare?
Myristic Acid is a fourteen-carbon saturated fatty acid. In skincare and personal-care formulas it can help create cleansing surfactants, add opacity, contribute to fragrance or affect the texture and structure of a product. It usually works as part of a formulation system rather than as a seb derm active. Two products can both list Myristic Acid yet feel very different because the amount used, pH, surfactants and moisturising ingredients are different.