Ingredient review
Sodium Dimaltodextrin Phosphate
INCI: Sodium Dimaltodextrin Phosphate
A gentle, sugar-derived humectant that helps attract moisture to the skin and may offer mild soothing benefits.
In plain English
Sodium Dimaltodextrin Phosphate is a modified sugar molecule that acts like a sponge, pulling water into the outer layer of your skin to keep it hydrated. It is often used in products designed for sensitive or irritated skin because it is very gentle and may help calm redness or stinging.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- semi synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Sodium Dimaltodextrin Phosphate 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 Sodium Dimaltodextrin Phosphate.
- 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
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A semi-synthetic ingredient derived from maltodextrin (a carbohydrate from starch) that has been chemically modified with phosphate groups and neutralized with sodium. It belongs to a class of ingredients known as sugar-based humectants.
How it works
It attracts and binds water molecules from the environment or deeper layers of the skin to the surface, increasing hydration. The phosphate groups may also help it interact with the skin's surface to provide a mild soothing effect, though the exact mechanism is not fully understood.
Pros
Gentle hydration
Provides moisture without the sticky or tacky feel some humectants leave behind, making it comfortable for daily use.
Soothing potential
May help calm mild irritation or redness, which is beneficial for sensitive skin types.
Cons and cautions
Limited research
There are fewer peer-reviewed studies on this ingredient compared to classic humectants, so its long-term benefits are less established.
Higher cost
As a specialty ingredient, it can increase the price of a product without offering dramatically better results than cheaper alternatives.
Best for
- People with dry or dehydrated skin looking for a gentle humectant
- Those with sensitive or reactive skin who want to avoid common irritants
Use caution if
- Individuals with very oily or acne-prone skin may not need additional humectants if their routine already includes them
Usage tips
Safety summary
Sodium Dimaltodextrin Phosphate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, making it suitable for most skin types, including sensitive skin.
Research notes
Evidence is primarily based on manufacturer data and a few small studies. It shows promise as a gentle humectant and soothing agent, but more independent research is needed to confirm its efficacy compared to established ingredients.
Common label clues
- Typical concentration
- 0.1% to 2%
- Regulatory status
- Approved for use in cosmetics in the US, EU, and other major markets. No specific restrictions beyond general cosmetic safety requirements.
- Common uses
- Serums, Moisturizers, Soothing creams
- Environmental note
- Derived from plant-based starch (maltodextrin), making it a renewable resource. The chemical modification process has a moderate environmental footprint.
Good to know
- It is often used in 'clean beauty' formulations as a natural-derived alternative to synthetic humectants.
- The ingredient is stable across a wide pH range, making it versatile in different product types.
Common questions
What is Sodium Dimaltodextrin Phosphate in beauty products?
Sodium Dimaltodextrin Phosphate is a modified sugar molecule that acts like a sponge, pulling water into the outer layer of your skin to keep it hydrated. It is often used in products designed for sensitive or irritated skin because it is very gentle and may help calm redness or stinging.
What does Sodium Dimaltodextrin Phosphate do in a beauty product?
It attracts and binds water molecules from the environment or deeper layers of the skin to the surface, increasing hydration. The phosphate groups may also help it interact with the skin's surface to provide a mild soothing effect, though the exact mechanism is not fully understood.
Is Sodium Dimaltodextrin Phosphate safe for most people?
Sodium Dimaltodextrin Phosphate is considered safe for use in cosmetics at typical concentrations. It has a low irritation and comedogenic risk, making it suitable for most skin types, including sensitive skin.
Who should be careful with Sodium Dimaltodextrin Phosphate?
Individuals with very oily or acne-prone skin may not need additional humectants if their routine already includes them
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.