Ingredient review
TEA-Dimethicone PEG-7 Phosphate
INCI: TEA-DIMETHICONE PEG-7 PHOSPHATE
A gentle silicone emulsifier that helps create stable, lightweight formulas without heavy residue.
In plain English
This ingredient is a modified silicone that acts like a bridge between oil and water. It helps mix ingredients that normally don't blend well, like oils and water, so your products feel smooth and spread easily. It also leaves a light, silky feel on skin or hair without being greasy.
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
TEA-Dimethicone PEG-7 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 TEA-Dimethicone PEG-7 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
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A silicone-based surfactant created by attaching a phosphate group and a short chain of polyethylene glycol (PEG) to dimethicone, then neutralizing it with triethanolamine (TEA). It is a clear to slightly hazy liquid used to stabilize emulsions and improve texture.
How it works
It reduces the surface tension between oil and water, allowing them to mix into a stable cream or lotion. The silicone part gives a smooth, non-sticky feel, while the phosphate group helps it rinse off easily. It also helps other ingredients spread more evenly on skin or hair.
Pros
Lightweight feel
Unlike some heavy silicones, this ingredient leaves a silky, non-greasy finish that works well for oily or combination skin.
Gentle emulsifier
It helps create stable creams and lotions without the need for harsh detergents, making it suitable for sensitive skin formulations.
Cons and cautions
PEG purity concerns
The PEG part can be contaminated with ethylene oxide during manufacturing, though reputable brands use purified grades. This is a general concern for all PEG ingredients.
TEA nitrosamine risk
Triethanolamine (TEA) can form nitrosamines if combined with nitrosating agents (e.g., certain preservatives). In well-formulated products, this risk is minimized.
Best for
- People with normal to oily skin who prefer lightweight textures
- Anyone looking for a gentle emulsifier in rinse-off products like cleansers and shampoos
Use caution if
- Those with known sensitivities to silicones or PEG compounds (rare)
Usage tips
Safety summary
Generally considered safe for topical use in cosmetics at typical concentrations. The main concerns are potential impurities from PEG manufacturing and nitrosamine formation from TEA, but these are well-controlled in quality formulations. Irritation and allergy are rare.
Research notes
Limited direct studies on this specific compound, but the safety of dimethicone PEG derivatives and TEA salts has been evaluated by the Cosmetic Ingredient Review panel, which found them safe as used. No significant human or animal toxicity data specific to this ingredient.
Common label clues
- Typical concentration
- 0.5% to 5% in rinse-off products; lower in leave-on formulas
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets. The Cosmetic Ingredient Review (CIR) panel has reviewed similar dimethicone PEG compounds and found them safe as used.
- Common uses
- Cleansers, Shampoos, Conditioners, Leave-on serums, Sunscreens
- Environmental note
- Silicone derivatives can be slow to biodegrade. However, this ingredient has a phosphate group that may improve biodegradability compared to unmodified silicones.
Good to know
- This ingredient is often used in 'sulfate-free' shampoos to improve foam and feel.
- It is biodegradable under certain conditions, but silicone derivatives can persist in the environment.
Common questions
What is TEA-Dimethicone PEG-7 Phosphate in beauty products?
This ingredient is a modified silicone that acts like a bridge between oil and water. It helps mix ingredients that normally don't blend well, like oils and water, so your products feel smooth and spread easily. It also leaves a light, silky feel on skin or hair without being greasy.
What does TEA-Dimethicone PEG-7 Phosphate do in a beauty product?
It reduces the surface tension between oil and water, allowing them to mix into a stable cream or lotion. The silicone part gives a smooth, non-sticky feel, while the phosphate group helps it rinse off easily. It also helps other ingredients spread more evenly on skin or hair.
Is TEA-Dimethicone PEG-7 Phosphate safe for most people?
Generally considered safe for topical use in cosmetics at typical concentrations. The main concerns are potential impurities from PEG manufacturing and nitrosamine formation from TEA, but these are well-controlled in quality formulations. Irritation and allergy are rare.
Who should be careful with TEA-Dimethicone PEG-7 Phosphate?
Those with known sensitivities to silicones or PEG compounds (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.