Ingredient review

Tridecyl Myristate

INCI: Tridecyl Myristate

Tridecyl Myristate is a reliable emollient that softens skin but may clog pores for acne-prone individuals.

beautyskincareemollient

In plain English

Tridecyl Myristate is a synthetic oil-like ingredient that helps moisturize and soften the skin. It works by forming a thin, non-greasy film on the skin's surface that reduces water loss and leaves skin feeling smooth. Because it can be moderately comedogenic, it's best suited for dry or normal skin types rather than oily or acne-prone skin.

Review score

Safety, usefulness, and evidence

3.8Good
3.8/ 5

Potentially useful with some tradeoffs

The evidence base is useful, but some claims depend heavily on the formula.

Main practical flags: irritation is low; clogging risk is moderate.

Source
synthetic
Evidence
moderate
Irritation
low
Clogging risk
moderate
How reviews are scored

Quick decision guide

Useful, but context matters

Tridecyl Myristate can be useful, but watch for possible clogging concerns.

Plain-English read

Treat this as a practical screening step before you compare products that contain this ingredient.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Tridecyl Myristate.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

low

Less likely to sting, burn, or bother most users, though sensitive skin can still react.

Clogging risk

moderate

May be fine for many users but deserves caution if you are breakout-prone.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

Tridecyl Myristate is an ester made from myristic acid (a fatty acid found in coconut oil) and tridecyl alcohol. It is a clear, lightweight liquid that mimics the feel of natural skin oils.

How it works

It sits on the skin's surface, filling in gaps between skin cells to create a smooth texture and prevent moisture from evaporating. This helps maintain hydration and gives a soft, velvety feel.

Pros

Effective moisturizer

Helps reduce water loss and keeps skin soft and supple without a heavy feel.

Improves product feel

Makes creams and lotions spread easily and leaves a smooth, velvety finish.

Cons and cautions

May clog pores

Rated moderately comedogenic, so it can trigger breakouts in acne-prone or oily skin types.

Synthetic origin

Not derived from natural sources, which may be a drawback for those seeking plant-based ingredients.

Best for

  • People with dry or normal skin seeking lightweight hydration
  • Those who enjoy rich, creamy textures in lotions and creams

Use caution if

  • Individuals with oily or acne-prone skin who are sensitive to comedogenic ingredients

Usage tips

Use in moisturizers or body lotions for dry skin, but patch test first if you are prone to acne.
Layer with non-comedogenic serums if you have combination skin to balance hydration without clogging pores.

Safety summary

Tridecyl Myristate is generally safe for topical use with low irritation potential. The main concern is its moderate comedogenic risk, which can be problematic for acne-prone individuals.

Research notes

Studies and safety reviews confirm that Tridecyl Myristate is a safe emollient at typical cosmetic concentrations. Comedogenicity ratings are based on rabbit ear tests and human patch tests, showing moderate pore-clogging potential.

Common label clues

Typical concentration
1–10% in leave-on products
Regulatory status
Approved for use in cosmetics in the US, EU, and other major markets. The Cosmetic Ingredient Review (CIR) panel has deemed it safe as used in rinse-off and leave-on products.
Common uses
Moisturizers, Body lotions, Facial creams, Makeup removers
Environmental note
As a synthetic ester, its environmental impact is lower than some petroleum-derived ingredients, but it is not biodegradable in all conditions.

Good to know

  • Tridecyl Myristate is often used alongside other emollients to create a luxurious, creamy texture.
  • It is considered safe for use in cosmetics by major regulatory bodies at typical concentrations.

Common questions

What is Tridecyl Myristate in beauty products?

Tridecyl Myristate is a synthetic oil-like ingredient that helps moisturize and soften the skin. It works by forming a thin, non-greasy film on the skin's surface that reduces water loss and leaves skin feeling smooth. Because it can be moderately comedogenic, it's best suited for dry or normal skin types rather than oily or acne-prone skin.

What does Tridecyl Myristate do in a beauty product?

It sits on the skin's surface, filling in gaps between skin cells to create a smooth texture and prevent moisture from evaporating. This helps maintain hydration and gives a soft, velvety feel.

Is Tridecyl Myristate safe for most people?

Tridecyl Myristate is generally safe for topical use with low irritation potential. The main concern is its moderate comedogenic risk, which can be problematic for acne-prone individuals.

Who should be careful with Tridecyl Myristate?

Individuals with oily or acne-prone skin who are sensitive to comedogenic ingredients

Research sources

Cosmetic Ingredient Review (CIR) Safety AssessmentOpenINCI Decoder - Tridecyl MyristateOpenPubMed - Comedogenicity of cosmetic ingredientsOpen

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.