Ingredient review
Tetradecyloctadecyl Myristate
INCI: Tetradecyloctadecyl Myristate
A gentle, non-greasy emollient that helps soften and smooth skin without clogging pores.
In plain English
Tetradecyloctadecyl Myristate is a synthetic oil-like ingredient that spreads easily on the skin, making it feel soft and smooth. It is often used in moisturizers and creams to improve texture and provide a silky, non-sticky finish. Because it is non-comedogenic, it is less likely to clog pores, making it suitable for many skin types, including oily and acne-prone skin.
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
Tetradecyloctadecyl Myristate 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 Tetradecyloctadecyl Myristate.
- 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 ester derived from myristic acid (a fatty acid found in nutmeg and palm oil) and a long-chain alcohol. It is produced to mimic the feel of natural oils while offering better stability and a lighter texture.
How it works
It sits on the skin's surface, forming a thin, breathable film that reduces water loss (trans-epidermal water loss, or TEWL) and helps maintain hydration. Its emollient properties fill in the gaps between skin cells, making the skin feel smoother and softer.
Pros
Lightweight and non-greasy
Unlike heavier oils, this ester absorbs quickly and leaves a silky finish, making it ideal for daytime moisturizers and products for oily skin.
Low pore-clogging risk
With a low comedogenic rating, it is less likely to cause breakouts, so it can be used in formulations for acne-prone skin without worry.
Cons and cautions
Synthetic origin
It is not a natural ingredient, which may be a drawback for those who prefer plant-derived or naturally sourced skincare components.
Potential for mild irritation
Although rare, some individuals with extremely sensitive skin may experience slight redness or stinging when using products containing this ester.
Best for
- People with normal to oily skin looking for a lightweight moisturizer
- Anyone seeking a non-comedogenic emollient in their skincare routine
Use caution if
- Those with a known allergy or sensitivity to synthetic esters (very rare)
Usage tips
Safety summary
Tetradecyloctadecyl Myristate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic potential, making it suitable for most skin types. Rare allergic reactions are possible but uncommon.
Research notes
Safety assessments by cosmetic ingredient review panels have concluded that similar alkyl myristates are safe for topical use. However, specific long-term human studies on this exact ester are limited, so the evidence is based on analogy to related compounds.
Common label clues
- Typical concentration
- 1% to 10%
- Regulatory status
- Approved for use in cosmetics in the US (FDA) and EU (CosIng) with no known restrictions at typical concentrations.
- Common uses
- Moisturizers, Creams, Lotions, Lip products, Makeup
- Environmental note
- As a synthetic ingredient, its environmental impact depends on the manufacturing process. It is not biodegradable in all conditions, but it is not known to be bioaccumulative.
Good to know
- Tetradecyloctadecyl Myristate is often used as a replacement for natural oils because it is more stable and less likely to oxidize.
- It is commonly found in combination with other emollients to achieve a desired texture and feel.
Common questions
What is Tetradecyloctadecyl Myristate in beauty products?
Tetradecyloctadecyl Myristate is a synthetic oil-like ingredient that spreads easily on the skin, making it feel soft and smooth. It is often used in moisturizers and creams to improve texture and provide a silky, non-sticky finish. Because it is non-comedogenic, it is less likely to clog pores, making it suitable for many skin types, including oily and acne-prone skin.
What does Tetradecyloctadecyl Myristate do in a beauty product?
It sits on the skin's surface, forming a thin, breathable film that reduces water loss (trans-epidermal water loss, or TEWL) and helps maintain hydration. Its emollient properties fill in the gaps between skin cells, making the skin feel smoother and softer.
Is Tetradecyloctadecyl Myristate safe for most people?
Tetradecyloctadecyl Myristate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic potential, making it suitable for most skin types. Rare allergic reactions are possible but uncommon.
Who should be careful with Tetradecyloctadecyl Myristate?
Those with a known allergy or sensitivity to synthetic esters (very rare)
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.