Ingredient review
Myristoyl Pullulan
INCI: MYRISTOYL PULLULAN
A gentle, hydrating film-former that leaves skin feeling smooth and plumped without stickiness — ideal for sensitive or dry skin types.
In plain English
Myristoyl pullulan is a modified sugar molecule (from tapioca) that forms a thin, flexible film on your skin. This film helps lock in moisture and gives a smooth, silky feel without being heavy or greasy. It's often used in serums and moisturizers to improve texture and hydration.
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
- semi synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Myristoyl Pullulan 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 Myristoyl Pullulan.
- 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 semi-synthetic ingredient created by chemically bonding myristic acid (a fatty acid from coconut or palm oil) to pullulan, a natural polysaccharide produced by fermenting tapioca starch. The result is a water-soluble powder that becomes a clear, flexible film on the skin.
How it works
When applied, myristoyl pullulan spreads into a thin, breathable film that reduces water loss from the skin (transepidermal water loss, or TEWL — the moisture that naturally evaporates from your skin). It also attracts water molecules, acting as a humectant to keep the outer layer hydrated. The film smooths the skin's surface, making it feel soft and look more even.
Pros
Gentle moisture lock
Forms a breathable film that reduces water loss without clogging pores, making it suitable for sensitive and acne-prone skin.
Smooth, silky feel
Leaves skin feeling soft and velvety, not sticky or greasy, which improves the sensory experience of your skincare routine.
Cons and cautions
Limited independent research
Most studies are from ingredient manufacturers; more peer-reviewed research on long-term use would strengthen confidence.
Potential tackiness in humidity
In very humid environments, the film may feel slightly tacky if too much product is applied, though this is uncommon at typical concentrations.
Best for
- People with dry or dehydrated skin looking for extra moisture retention
- Those who prefer lightweight, non-oily textures in their skincare
Use caution if
- Individuals with known allergies to tapioca or coconut-derived ingredients (rare)
Usage tips
Safety summary
Myristoyl pullulan is considered safe for cosmetic use with very low irritation and comedogenic potential. Patch testing is recommended for those with extreme sensitivities, but adverse reactions are rare.
Research notes
Evidence comes primarily from manufacturer studies and cosmetic chemistry literature. It shows effective moisture retention and skin-smoothing properties with good tolerability. More independent clinical trials would be beneficial.
Common label clues
- Typical concentration
- 0.5% to 3%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and Asia. No known restrictions at typical use levels.
- Common uses
- Serums, Moisturizers, Eye creams, Masks
- Environmental note
- Pullulan is produced via fermentation of tapioca, a renewable crop. Myristic acid is often sourced from coconut or palm oil; look for sustainably sourced palm oil if that is a concern.
Good to know
- Myristoyl pullulan is often used in 'glass skin' or 'dewy' finish products because of its smooth, reflective film.
- It is vegan-friendly and typically derived from non-GMO tapioca.
Common questions
What is Myristoyl Pullulan in beauty products?
Myristoyl pullulan is a modified sugar molecule (from tapioca) that forms a thin, flexible film on your skin. This film helps lock in moisture and gives a smooth, silky feel without being heavy or greasy. It's often used in serums and moisturizers to improve texture and hydration.
What does Myristoyl Pullulan do in a beauty product?
When applied, myristoyl pullulan spreads into a thin, breathable film that reduces water loss from the skin (transepidermal water loss, or TEWL — the moisture that naturally evaporates from your skin). It also attracts water molecules, acting as a humectant to keep the outer layer hydrated. The film smooths the skin's surface, making it feel soft and look more even.
Is Myristoyl Pullulan safe for most people?
Myristoyl pullulan is considered safe for cosmetic use with very low irritation and comedogenic potential. Patch testing is recommended for those with extreme sensitivities, but adverse reactions are rare.
Who should be careful with Myristoyl Pullulan?
Individuals with known allergies to tapioca or coconut-derived ingredients (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.